Well, snakes are pretty flexible but sometimes they actually hurt themselves too. I remember (on another forum) that someones snake died from pushing thru
the gap in a plastic cage (a "critter cottage" with the vents like a "comb"...some of the "teeth" were broken...it was awful & gruesome) so I totally "get" worrying.
That pet store boa was many years ago in another state, & no sorry, I don't recall any more than that...not the specific kind. They weren't the best pet store-
they often sold w/c imported snakes with mites & other issues, so I can't say that falls were the only thing their boa suffered from.