Should This Free Throw Count? (Video)

[Danvrapp]

Yes - I'm well aware the shooter can step over the line once the ball contacts the rim.

Since everyone seems to be thinking that it was whistled (falsely) because it hit the top of the backboard, what I was wondering is if the play was whistled instead (falsely) because she stepped over the line. If we're talking about an official that doesn't know the ball can't hit the top of the backboard, why aren't we considering that the official doesn't know she can't now step over the line?

If you watch the video, she steps over the line and almost immediately the whistle gets blown. Unfortunately, that is approximately the time that the ball contacts the top of the backboard.