[zebraman55]

Let's keep things simple here.......The offensive guard had no intention of catching the ball, wasn't even facing the passer. In this case,it is just that the ball "slipped from the passer's hand". Common sense here says A's intent was to do nothing more than stop the clock, which the passer clearly attempted to do.

Incomplete pass, stop the clock, and allow A to set their strategy for their next play.