2♥ shows a weak two-suiter with 5♥s and another suit. 2♠ asks. It was described both in answer to a question and to the TD as especially being interested in spades, but the SCs do not support that: a 2NT response is natural, and 2♠ is the only way to find out the second suit. We believe N/S were experimenting with a new bit of system.
West asked several questions before his second pass. N/S asked for a ruling because they felt East's bid was made easier by the questions.
While Deep says 3NT goes four off it actually made. I reckon a diamond lead is the way to really destroy it, but is very unlikely on the bidding.
Merely out of interest, and nothing to do with the ruling, my regular partner was playing in the other room in this team, which won the main event last year. Sadly they had a very bad time, and needed a ruling their favour here to get into the secondary event. They did not get it, and an appeal upheld the TD - and they had a dreadful evening in the tertiary event.
How would you rule?

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