Not sure about this one? Guidance please?

[walter]

Christmas tournament championship game. Three person crew. I'm lead table side, the table is to my left. A1 dribbling with the left hand and driving hard to the basket from the wing and down the middle. I see B1 in the lane C-side whack A1 across the upper arm/shoulder area. A1 then gets lost in a sea of bodies in the paint, emerges a split second later and lays the ball in. I had a whistle when the contact occurred but then I couldn't tell whether the dribble ended or if A1 started the shooting motion. I wiped off the basket at the spot where I blew the whistle. Team A coach immediately starts jumps up in the air yelling that A1 had clearly started the try. As I headed to the table to report I stopped and asked T whether he saw the play especially since I admit I lost the player after contact for a brief second in the paint and couldn't tell whether the dribble was over or not when I blew the whistle. T tells me the dribble had in fact ended right as or right sfter I blew the whistle. I then went to the table, and based on that information counted the basket and reported the foul. Team B coach wanted an explanation. I told him I couldn't tell when the dribble ended so that's why I initially waived it off but after conferring with my partner, I knew I kicked it. There is no doubt about the foul and the try for goal had started and that's why even though I wiped it off, the basket does in fact count. I then told him I'd work harder to get better angles. He thanked for the explanation and the game went on. In the locker room at half, we talked about it and my partners felt that even though I corrected the initial call and got it right, since I intially waived it off, we should have lived with the waive off and proceeded from there. What do you fine folks think?