Correctable?--end of half shot

[Raymond]

FED Rules.

Christmas tourney, my crew is in changing room when officials from ongoing game come in at halftime.

R had last shot responsibilities and counted basket at buzzer. Now he is talking to his partners about the play and he realizes that he blew the call, ball was released after buzzer. U1 has no opinion but U2 says ball definitely was released late.

Discussion ensues amongst all of us whether it is a correctable error. I say it is (erroneously awarding a basket). We pulled out rules and case books but nothing directly addressed this situation.

Crew decided not take the points off the board. Game turned into a blow-out and 2 points had no affect on outcome.

Opinions, interps, or relevant case plays please.

OT: When we arrived at the game in 2nd quarter there was a long delay. Turns out a player threw up during a live ball. No one word if he threw up on anybody's shoes.