Off Topic: Rules Question

[bob jenkins]

I hate to bring up a real basketball / officiating question, so I apologize in advance for bringing an off-topic discussion to this forum:

Play: FED rules. A scores a basket with 4.8 seconds remaining. The score is now B:46, A:44. Team A is out of time-outs. Player B1 (stupidly) grabs the ball as it falls through the basket and throws the ball: (a) high in the air, (b) to the other end of the court, (c) out of bounds under A's basket and away from the court.

Ruling:??

(Is there any penalty / delay warning to B? When (if ever) does the ball become live (what if A "fouls" during this sequence)?)