Thanks for responding Joan and Peep! I went to the vet in the AM (and then had to rush to pet store for supplies and then back to work!). I finally get to sit down to type this! It's a loooooong post. I mean LONG.
To answer your question Joan: Yes! I was 100% sure it was degloved. The vet confirmed this when I got there too. The vet recommended I just let it dry up and fall off as clipping it would be traumatic.
Now, for everything else. The vet remembered Reepacheep and agreed this squirrel was much bigger (already at such a young age in comparison). I told him all the symptoms and everything that I typed here about the esbliac etc. He palpated (spelling?) his tummy and checked him out (which was a challenge because Samson was trying to escape and run around all over the poor vet). His gait wasn't off and he was able to grasp fine...he was even clutching on to the vet's shirt for dear life. He said his liver and kidneys etc seem fine (good size) and that he looks just fine. I don't think he thought it was a head injury etc because he examined him and was watching him move.
I mentioned right off the bat that I think he either hit his head, had MBD (which he knows about), or had some other issue that caused the off balance behavior etc. After having checked him out he said that a blood test wouldn't be the best idea to test for MBD because sometimes when they take the blood test, the blood test will pick up good calcium levels in an animal with MBD due to the fact that MBD leeches calcium from the bones (like osteoperosis). He also said (without me saying anything about what you guys said) that xrays don't show MBD until it's very very severe, so that xrays wouldn't be that helpful either. I think he still offered it to me, but he said it was extremely unlikely we would see something since bones de-calcify at random spots and levels with MBD.
The vet also asked me about supplements and what I was using for calcium and I told him I was using avitron multi-vitamin (liquid multivitamin). He told me to use PRIME powdered bird vitamins instead (it has the most calcium of any vitamin supplement too), especially since liquid vitamins lose their potency quickly in water. He told me to use the PRIME everyday for 2 weeks and repcal once a week, then I can go down to PRIME 2-3 days a week and rep-cal once every week. He said this should help it if it's the MBD, even if he is acting normal now.
We also discussed diet in general....I told him about Reepacheep's necropsy results and about how Samson had the same issue gaining weight/not eating a whole lot or storing fat as Reepacheep did and that Samson also arrived underweight and too young (they are from the same breeder so that I didn't beat myself up about the variables). I asked if it would be good to take out his wheel once in awhile, and he said “no” and that the wheel is soooo beneficial long run it's not worth it to do so .
Overall, he said that there could be a few things at play here:
1).Metabolism: The vet said that he may just have a fast metabolism or certain individual things at play (didn't ask him if this was genetic, but I'm guessing that's what he means too), therefore he needs more calories and I need to feed Samson more than what others might do for their squirrels. However, I told him I give Samson loads of food, but that he just never gains weight and sometimes he doesn't seem to pig out as much as I hear other squirrels do (Reepacheep had the same issue)......which leads me to point 2).
2). Diet: I told him I have trouble getting Samson to eat monkey biscuits, rat blocks, etc in addition to seeds, nuts and veggies/fruit. I also tried HHB on Reepacheep and he got sick from it I think (regurgitating and got ill) but I didn't mention that to the vet and it could have been a coincidence. Plus, I thought it may overdose him on vitamins in combo with PRIME vitamins. He recommended I try OxBow pellets and said that he would research it for me and gave me the website so I could research it myself. We both thought the rat formula might be best, but we'll see.
He said that with picky eaters, OxBow is usually well-accepted and that they only use timothy hay in some formulas. He said this would be better for Samson than the bird food/pellets I suggested (just to get him to eat more) because it has safe doses of Vitamin A. He said bird seed/pellets have too much Vitamin A and that can possibly lead to fatty liver.
3).MBD: He said that if it is MBD (which we are testing to see with the new supplements etc), this could also be what is causing the lack of fat storage/appetite.
So, if he improves with the new calcium regimen, I'd say it was MBD. If he improves with the new diet, it could be picky eater. I will note that both Reepacheep and Samson never ate as much formula as they should have and I fed them the same seed mixes/supplements and food people on here were feeding. Reepacheep and Samson have had a similar diet too and Reepacheep I don't think ever showed MBD issues.
I would also think a good part would be genetic as well (metabolism issue vet brought up maybe?) and what Peep said about inability to properly absorb nutrients (which I felt deeply in my gut was Reepacheeps' problem). I got Samson from the same breeder as Reepacheep because she offered to replace him, but more importantly....because I wanted to keep ALL variables the same! But...diet and supplements plays a roll too and it could have been both that and genetics (one not helping the other). I know 100% sure that Reepacheep was just like that. With Samson, since he didn't arrive so sick and was clearly bigger, it could very well be poor husbandry too or just that. Soooo.....yeah. We will have to experiment and see!
I told the vet about the NFSA and that we have a database for necropsies to gain knowledge on health, diet, etc and that we have a forum to help flyer owners as a whole. He was VERY interested and asked me for the website, so I gave it to him. I think he is very interested in the subject and really wants to help

Phew...I should get this bound in a book it's so long! Sorry!!! I'm incredibly long-winded. If you need me to cut it down, let me know and I will edit!! I never know how much detail to give.