We were at USF this June (2011) and a park staffer walked over to us as we were taking pics at the old firehouse entrance (Still a tradition for us, even if it does have a rollercoaster track running through the front window now
). Anyway, he stopped and was talking with us for a bit and said that he didn't even know that there had been a GB show there until a few weeks previous when he was going through one of the storage areas on site and saw a bunch of props that one of the other guys told him were from the old GB show.
So, FWIW, it sounds like some of it might still be there.
He wasn't a fan, so he couldn't tell us what kind of stuff it was.