PanRak

I, personally, don't see a LA to 3NT after partner volunteers ♣ and you have ♠AK, although perhaps I might think differently at matchpoints, rather than the actual (quirky) aggregate scoring. However, there is another possible way that Bluejak may have been damaged by the MI - had he been given the correct explanation at the time of the 2♥ bid, might he have found a bid of e.g. 3♥ pass/correct rather than double? - surely much less likely partner has hearts now than after the given (misleading) explanation. This might lead to a different final contract, as the 3NT bidder could justify his 3NT bid only by partner's 3♣. Glad to hear it didn't affect the final result