[jritchie]

if you call the "t" for making the ring vibrate....then you just called a "t" on the kid for grabbing the rim to protect him/her self...and then letting go and the rim was still shaking when the shot was taken!!!! So the book says it's legal to grasp the rim, to avoid injury, so when you let it go, it's going to shake a little...so if you determine the grasp to be a legal one, you can't call a "t" when they let it go and a shot is taken as long as it gets put back in it's upright location before contacted by the ball.... IMHO!