If you think that your BP has IBD, it needs to go to the vet NOW to make sure that he has it. This can easily pass over to all of your other snakes, and it usually kills them in a matter of weeks. There is no cure for IBD, which is why it is so important to quarantine these snakes for at least 60 days, and have at least one or two vet visits during those 60 days to make sure the snake is 100% healthy. If those snakes are not in seperate rooms, (or better yet, seperate buildings with different air supply) seperate them NOW. and to be safe, I would take your other snake to the vet for a check up as well, but at a different day/ session than the snake with the possible IBD to be on the safe side.