I never did say what we did with the sitch.
Now that some discussion has been posted, here is what we did:
We talked about it and two points were brought up:
(a) re-do the throw-in from the original throw-in spot
(b) have an A throw-in from a spot nearest to where the ball was when A2 was 1 foot from the ball and team B players were no closer than 25 feet from the ball
I know that I've done some odd things in the past, and I didn't deviate much from that with this situation. We went with option (b). Team A throw-in at half-court.
If anyone wants the rationale, ask.