What do we have here?

[ma_ref]

Originally Posted by Ref in PA

by the time the signal is started by the ref, the shooter is clearly in the act. In fact, the shot is away before the ref completes the signal.

Agree with previous poster. Signal/whistle has nothing to do with this at all. Our whistle is only there to tell the timer to stop the clock, and our hand signals are a visual cue for the benefit of everybody to know what's going on.

For sake of argument, let's say the coach dropped the f-bomb on the trail in the video. Trail raises hand, blows whistle, T-signal. Now trail has to determine whether or not shooting motion started before f-bomb. If I were trail in this case, and that was the defensive coach, it appears in the video as though some kind of shot was immenent, so I'd hold off for a second for the offense to get a shot, wait to see if it goes - to avoid any timing confusion, then blow my whistle and bang him with a T. If that coach is on the offense, I blow my whistle immediately, wave off the shot, and throw the T.