W - N - E - S
P - P - 1NT- P ; 1NT = 12-14 announced (East upgraded his hand)
P -2H - P - P ; 2H showed both majors but was not alerted
x -2S - x - AP; x(W)=takeout, x(E)=penalty (given that West has shown
some spades)
2Sx made 9 tricks.
North did not ask about the first double and assumed it was penalty, therefore corrected 2Hx to his longer suit.
The MI about 2H came to light after it was too late to change West's final pass, but of course he wouldn't have changed that call anyway.
EW claim that if 2H were alerted, West's double would be less attractive (though West admits he might have doubled anyway), but in any case it would be takeout of both majors (i.e., showing minors, nothing about spades), and East would have an automatic 3D bid.
What should the ruling be? This is ACBL, so weighted scores are not possible, but feel free to comment on what might happen in other jurisdictions. And for amusement, can you guess the actual ruling? (No, not avg+/avg-; that would be too easy!)

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