Move or Moved: A ball is deemed to have "moved" if it leaves its position and comes to rest in any other place.
so, when you ground your club in the rough and the ball leans one way a tiny bit as the grass bends, just to go back where it was when the grass unbends after you lift your club back up (in horror) ...
Does this happen all the time and is it accepted practise that if the ball returns to the same position according to the naked eye then there's no problem?
I see pros being pretty liberal with their clubs in the rough, I can't imagine that this never happens to them, but I've never seen any of them sweat it...