A lot of snakes will stargaze or show symptoms that mimic IBD when they are badly sick, and there are a lot of other problems (as noted above, pesticides or overheating), or even other diseases besides IBD. I wouldn't ever throw those three letters around without a positive test from the lab at the University of Florida.

Hopefully the new arrival has been properly quarantined well away from your other snakes. If it dies I would have it necropsied.