IMPs Table Result 4♦xx= EW+920
The North London Club resumed its internal competitions this week, and there was a curious incident when SB and Colin the Corgi met Oscar the Owl and the Rueful Rabbit in the Chairman's Cup. CC, North, had played fairly well until this late board. OO, West, knew they were losing the match, and decided to try something, knowing that his 4♦ was systemically diamonds and major, and expecting to create a random result, possibly with RR forgetting. RR alerted 4♦ and initially described it as both majors, but when pressed by CC who said that 2♦ was a multi, not a weak two in diamonds, his memory was jolted, and he replied, "then I think that is diamonds and a major, but I am not sure". North doubled, alerted by SB, South, and correctly explained as "Bid your major if you have a weak two". RR was rather confused by all this technology but he wanted to play in his partner's major if he had one. He also doubled, assuming it would have the same meaning as North's double. SB gave him a withering look. "Why do we need the TD on just about every hand you play, RR?" he asked rudely. "Director, please" he called, almost apologetically.
The TD arrived and read out Law 36. RR was now fully confused and substituted Redouble. He knew that could only be SOS as he was not allowed to redouble for business with any of his North London partners. When his partner passed (perforce) he went a bright red and apologised profusely when he put down the dummy. Oscar the Owl had no difficulty guessing the diamonds on the bidding and was soon notching up +920. "We might manage the rara avis of +920 in both rooms despite the adverse vulnerability" commented OO, but SB was far from amused.
"You could have been aware that making an initial inadmissible double and then substituting redouble could well damage the non-offending side", he shouted at RR. "And you also breached Law 72B1 in that you deliberately broke a law and were prepared to pay the penalty," he continued. If you had just redoubled without doubling first, West would still have passed, but now North would have known that West had very long diamonds and would have bid 5♣, which I might well have raised to six. And you are unlikely to have found the ace of hearts lead. So, rather than -920, I think the score should be changed to +920. In addition there was potential MI unless E/W can prove that 4D showed diamonds and a major." "I can," replied OO, "and have a complete system file here". "Not that RR remembers any of it mind you," he added. "But his second explanation was indeed correct".
How would you rule?