Second, there certainly was misinformation, but it didn't cause damage. SB read - and we all know he remembers, as we know he records chat - "weak NT and three weak 2s" at the beginning of the round, and 15-17 on opening. He therefore knows there was MI somewhere, but chose not to clarify. Any damage caused was completely from his own choice to not resolve the ambiguity at the time. Even if it wasn't immediate, SB has been playing against RR and partners forever, and a switch of system at all he knows (probably from his own experience, having Unlucky Expert-like attempted to add system to RR's brain when playing with him) is a disaster, so would be a major surprise.
In fact, I believe SB allowed this to happen so that he could get a good score either way - if it turned out that RR had 15, he could complain that the initial round announcement was wrong, and got him to misdefend, as evidenced by the fact that RR announced 15-17 and had 15; or if it turned out that they had changed and the announcement was wrong, he could gain on that. All of that instead of doing what he should and resolving the ambiguity so that the game can be scored at the table instead of in the director's hands.
Quote
However, it is very important to call the TD immediately when...there is conflicting information about the meaning of a call or play, e.g. when an explanation is different from the system card...
1.3.2 Misinformation and damage
A player's claim to have been damaged...wil fail if the player was aware of its likely meaning...
[yes, I know here, it's about failure to Alert, not mis-Alert, but I would argue that this is definite evidence of the way the EBU wishes to rule in "known MI" cases. I also know that I snipped the "without putting their side's interests at risk" bit - but after the auction, there's nothing to risk except the "they did something wrong, we deserve a good score" double-shot attempt at the end.]
I guarantee if, after consultation with the other directors around (and SB doesn't count), I have to poll, I'm polling with the *complete* information: "so you're told they play weak NT, but there was a comment about switching from righty, and first chair, LHO opens 1NT announced "15-17". The auction continues... Any people who ask "so, which is it?" or the like get recorded, in addition to all the other responses. I expect I will be able to say "the poll shows there was no damage, because almost everyone chose to find out what the range actually was before misplaying, and so got it right."
This is classic "they did something wrong, we get a good score." No, you still have to show up to the table. There are people who *want* the ability to win because the opponents have a momentary disconnect between brain and tongue, and it sometimes applies. But not here.