Hi,
Not really from all I have read. It seems to kill BP's in 3-4 weeks.
The reasons people point to boas is simply that they can have it without showing symptoms for a long time and are quite a common pet in reptile collections.
To the OP.
I don't think it's IBD either - just the spider wobble.
You keep mentioning his weight but you didn't actually tell us any figures on weight gain or weight loss?
To me the snake looks fine body condition wise but weight would be a better way to judge progress I think.
And I wouldn't worry about skipping a few meals - no matter the paintjob it is still a BP.
dr del