Well, the temp gauge in the back reads over 90 degrees F. Could just be laying on the glass to cool off. I keep my red tail at about 92 on the bedding, but ambient will be around 80, not in the 90's like that tank reads.
But who knows how it's heated, I'll find out the next time I'm at my wife's Petco. I think most cases of IBD that I have read about shows the snake holding it's head unsupported also. Petco do have vets for each region, so you can notify them and they can get their vet to check it out.