[Dave Brost]

I think one way to look at this play is by using the advantage-disadvantage theory. Since the free throw was good, there was no advantage gained by A2 leaning early. Had the free throw not gone in, you could have blown the whistle right away and called it. This takes away the advantage that he had by moving early. You would still have to explain it to the coach in this case, but probably a good no-call if the shot goes in. You may then warn the player about it, so that he knows that you are aware of him moving early. If it happens again, you have this to go back on.
Any other thoughts?