What to do ?

[Refk]

Officiating a boys JV game , ball inbounded from endline into team A's frontcourt . Player A tips the ball on the pass and it goes into the backcourt where my partner (T) calls violation for backcourt. The next dead ball my partner tells us that he blew it and had a brain fart. He asked us what he should have done and we both said that if he knew he made a mistake immediately, then rectify it with an inadvertent whistle or let it go. While driving home he thought that one of us should have gotten involved. I told him that I thought our explanation during the game was appropriate.

Thoughts ?