UPDATE:
I'll be posting updated pics tonight, being that it's Wednesday and decision day.
I've been soaking his tail twice a day in Betadine and coating it in Polysporin.
The part below the injury went grey, dead, and is pretty shrivelled. It's barely being held on by a piece of skin. I suspect a good shed will take care of it.
There is no change to the injury site itself though...it looks the same as before, although a bit redder and wetter (a side effect to using Betadine and Polysporin constantly, and keeping it moist?). However there is a tiny piece of bone sticking out of the good part of his tail, not sure if I didn't notice this before, or if it's because it was covered by the bottom portion of the tail before (which has since receded). Will the wound eventually close on its own, even with my constant treatment?
I'm not seeing any changes or signs of infection to the good part of the tail. However, I did a bad thing and went on Google, so now I don't know if I'm being paranoid or what. My question is - what are the chances he could get septicemia from this? Can it develop on its own, or is the result of an untreated infection only? I'm extremely tempted to take him in for preventative antibiotics just in case. Do those exist? And I know there are risks associated with antibiotics, but in his case, would they be a good idea? I don't want to medicate him if unncessary, but I'm not experienced with this so I'm really at a loss as to what to do. The herp vets I'd take him to aren't very knowledgeable with Tokays (not as common around here) and are sometimes questionable in their theories as it is with more common reptiles.
I also notice that he develops this black crusty stuff on the wound site. From what I understand, this is a scab starting to develop, correct? However, soaking and treating the wound removes the crust. Is that a good idea, or should I be letting it form?
He's not eating a lot at the moment, but he's still quite active. I'm wondering if my constant manhandling is putting him off food? He didn't eat much before when he initially presented with issues and I was doing the same. However, I've also been strongly trying to encourage bowl-feeding, so I've severely limited the free-roaming crickets. He may still be trying to adapt to this as well, I'm not sure.
Anyway, any advice would be appreciated. I hate the fact that the vet is so far away, as I know stress won't help him at all either, but I'll take him if it's needed.