You make the call

[Tony Wilde]

This diddn't happen to me, but I am curious how you would call this:

A1 has the ball and A2 sets a screen on B1 near the sideline. (A2 sets it according to the rules.) B1 either seeing the screen or bumping off of the screen goes out of bounds the comes back in to get back to a defensive postion with A1. T-Foul or let it go for a good heads up, because real damage done????