throw-in boundary line violation

[Mark Padgett]

Here's the problem I have always had with the interpretation that once the ball is released toward the court the defender may break the plane but must not touch the ball until it crosses the line:

What other reason would the defender have for breaking the plane if not to touch or grab the ball? If you let him break the plane at that point, aren't you encouraging him to touch the ball?

I think the rule should be either that both are a violation or neither is a violation (or technical). I do agree that if a defender reaches across and hits the ball before it is released, it should be a T.