Neal said:The plastic socket may melt if it gets too hot. It is recommended to use a ceramic socket with MVB's.
The best course of action would be to take him to a vet. There could be quite a few things going on, and without being able to physically observe the animal, that is really all I can suggest at this point as it sounds like he is in a critical state.
Do you know the average cost to visit the vet? I have never been to one and I hope there is one near my house. I would believe reptile vets are hard to come by.