I earned my TD card many years ago, and they have changed the laws many times since. One thing I am still sure of. Call the director as soon as an irregularity is discovered! not after you think they have done something compounding the error. your partner is entitled to know what his options are in accepting the insufficient bid. left hand opponent is entitled to know what options exist if the call is not accepted and what the penalties for exercising those options are. This is a classic example of why the director should be called immediately. left hand opponent has now had 2 chances to pass information to his/her partner before the director got there. This particular option is the best one in the game. If I want to raise partners hearts without raising the level he bid at, I can accept the insufficient bid. If I want to make an overcall below partners bid, I can also accept. and If i don't, I get to make the opponents find a nearly equivalent bid or bar their partner. As far as the ethics of accepting the insufficient bid go. You are at a tournament, consider the ethics of not playing to win and giving this opponent an unearned advantage.