IMPS; Lead 8♠; Table Result NS+590
I am indebted to Don Smedley, Grandmaster of Double Dummy Solving, for composing a similar hand to the above which is from a match last night. West decided not to go to 5♥ at the vulnerability, which was wise, and led the singleton trump, having read Burn's Law about leading trumps against doubled contracts. Declarer played low in dummy, and East won and continued with the queen of clubs. North won, cashed the king of clubs, and noted that West discarded a heart. He was a bit of a rueful rabbit, so the information was of little value to him. He exited with a club to East who switched to his heart. South, RR, played the ace, and carelessly ruffed it in dummy, attempting to correct it to a small diamond fairly quickly. East, known for his active ethics, said, "That's ok, we know what you meant," but North, an SB lookalike, indicated that to discard would now be an irregularity, and he wanted to call the TD to prevent an irregularity. He was busy reciting 40B2 verbatim, when East interrupted him with, "I don't think it matters, I get two trumps anyway. If you draw trumps you lose a club or a diamond". "That is a defensive claim, and I object," continued SB, in his customary manner. "After ruffing the ace of hearts, partner could lead the jack of diamonds. If you play low (covering does not help), declarer ruffs a club, cashed the ace and king of diamonds and ruffs the nine of diamonds. Now he ruffs a heart with the ace of spades and scores the jack of spades en passant." "+590, I think, or do you want the TD to come to dot the "i"s and cross the "t"s", he goaded, quite prepared to accept the PP for making his own ruling.
"And you did extremely well, partner, to realise that the ace of hearts was a mirage," continued SB provocatively. "If you had not ruffed it there was no way home."
East thought Dummy was participating in the play, but SB knew that he was no longer dummy when East claimed, and he was within his rights to object to the claim. How do you rule?