Had a situation a few yearsa go at a national tournament where a referee called a lane violation, but relaized there was none (inadvertant whistle). Only problem was he never told the table about the inadvertant whistle part of the play.
Several mintures later, when the team realized it was hsort a point on the scoreboard, the referee inquired and I let him know we had alane violation. Got told there was none and the free throw should count. Fixed it and we played on
