This was Face to face, south alert the 2♥ and explained it as follows
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The defense started ♣Ace then a spade.
After the hand was over, EW called the director stating they had been given Misinforation regarding the 2♥ bid and that north did not correct the MI.
North told the director he thought they played jacoby transfer on this auction, and when the director asked North while he didn't correct the "misinformation" when he bid 2♠. North replied that it was obvious what had happened when he bid 2♠.
EW stated
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The director ruled EW were damaged by MI and changed teh contract to 2♥ down two for +200 EW.
In appeal committee none of the facts were in dispute. The committee also uncovers..
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An examination of N/S convention cards clearly showed that they played a specific runout convention over 1NT doubled. Although the actual runout sequence was not listed on the card, the committee members were familiar with the runout where 2♥ shows both major. The convention card also had the major transfer boxes checked on the front of the card with the “system on” box checked on the back. The play in 2♠ doubled had been: ♣Ace, ♠ to the King, ♠ACE, ♦Jack.
Please vote on how you would have ruled if you were on the appeals committee, and in addition, answer these questions in your reply.
1) Was there MI?
2) Should North have corrected south's explaination or was it obvious what happened
3) Did E/W do anything to hurt their case?
4) In addition to your ruling, would you do anything else?
Pass Pass 1♣ 1NT
DBL 2♥(1) Pass Pass
DBL 2♠ Pass Pass
DBL All Pass
1) See alert, by South
2♠x made +870 NS