My 11 month BP also outgrew his hide and was lifting it off the ground, but I had used a larger hide previously and he has not had a problem moving into the larger one full time.
http://jkrballstreetjournal.com/2014...-eating-again/
This is a very interesting and informative article and while it's about problem feeders has good information about BP behaviour. I offer similar advice for you:
After the next shed/poop cycle, clean the enclosure, clean the snake, and switch up the hide at that time.