W N E S
2♦ #1 2♥ #2 Dbl #3
P 2♠ P P
3♣ P 3NT P
P P
# 1 Alerted: asked: described as "A weak two in either major".
# 2 Alerted: asked: described as "Takeout, with some length in hearts".
# 3 Alerted: asked: described as "Pass or Correct, ie pass with hearts, bid 2♠ with spades".
The Hubert Phillips is Mixed Pivot Aggregate knockout. I was South. I told our opponents after the hand I would seek a ruling, but by agreement since no-one competent was present it was deferred to the end: by then it could not affect who won so was not pursued.
At the end of the auction East said his 2♥ had been misdescribed: he believed 2♦ was a Multi opening, so bid 2♥ as per their Multi defence, which meant it showed a good hand, with hearts.
While I did not believe th MI affected us, I was unhappy at East progressing over 3♣, since from his description he had shown his hand. I wondered whether he had been affected by his partner's misexplanation.
How would you rule?

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