Its not a commitment until signing day. Until then, its just a verbal, which means nothing. About as meaningful as a coach's long-term contract. And that's a contract, and it still means nothing.
A coach can pull an offer up until signing day. And kids get pressured every day to commit, and are told that their spot might be taken by someone else soon if they don't commit. With these being the circumstances, I'd advise any kid to verbal if it feels right, but to keeping looking around. Sucks to be a fan and watch this happen, but I don't fault any of the kids, given how the process goes.