Kid will land on his feet, and get a full ride elsewhere...I wish him the very best; however, ANYTIME you can get better...in all of reality, it shouldn't even be debatable on whether you do it or not.
Not to mention, kids have taken a commitment or a "heavy-lean" to the podium to sign, only to sign somewhere else, truly "shocking the world". We see what a "commitment" means to these kids time and again.