Stupid Violation/Last Second Question

[Mark Dexter]

Time ticking down at the end of the game, with A-43 B-40. B1 fouls A1 and we have two shots for A1 with 2.3 seconds in game. A1 misses first shot, then when he has the ball for the second shot, A2 came flying into the lane from outside the arc ! No shot - blue (B) ball.

B then calls timeout. (And, of course, they think they'll get the ball at halfcourt.) B1 has ball under A's basket and throws a long one toward their own basket. Clock starts while ball was in the air (not tipped), A2 grabs it (with about 1.3 on the clock) and time expires. (The timer was A5's girlfriend, BTW. Don't think it was on purpose, though.)

Here's my question: horn did not go off in the air, so it wasn't "obvious." Should I reset the clock and re-do the throw-in if (a) A2 holds; (b) B catches and misses/shoots after the buzzer; or (c) B catches and makes the 3?