Continuous Motion

[IREFU2]

I had a situation last night in my game whereas A1 is driving to the board and B1 had his hand in the side of A1. I blew my whistle between the first and second step as he was attempting to lay up the ball. In my opinion and according to the rule:

SECTION 11 CONTINUOUS MOTION

ART. 2 . . . If an opponent fouls after a player has started a try for goal, he/she is permitted to complete the customary arm movement, and if pivoting or stepping when fouled, may complete the usual foot or body movement in any activity while holding the ball. These privileges are granted only when the usual throwing motion has started before the foul occurs and before the ball is in flight.

I believe he was in the act of shooting, therefore I gave him the bucket and one free throw. Comments?