"Committing" isn't what it used to be. I would guess only about 80% of verbal commitments honor it. Its common practice for these kids to take visits and rethink a commitment. Pitt, like everyone else has no choice but to let them.
Butler is the kid who has yet to step foot on campus and at the time of commitment said he was going to look around. The Florida kids are odd in doing this. Carmoni Green said he was still going to loom around after verbaly committing to Illinois.