As the other posts indicated, the operative issue here is whether there was team control after the shot attempt. During a period of no team control, team control is established when a player establishes player control. Player control is defined as holding or dribbling a live ball inbounds.
If you felt that either A1 or A2 held the ball at any time, then there was player control, hence team control, hence a violation. If not, then no violation because team control was never established.
Only you and your partner were there. Did either player hold the ball or not. You must make a split second decision. Your answer cannot be he "sort of" held it. This is one of those black or white situations that allows no gray.
This is why we get the big bucks.
