I just watched Sveindal-Auken vs Pottenger-Rimer (board 25, round 6A):
East (Sveindal) got on lead (vs North's 1NT, with 5 tricks to N-S) in this position:
Scoring: IMP
East proceeded to cash all his diamonds in descending order of rank; on the ♦5, Auken pitched the ♠A, and also pitched the ♠K on the ♦2, thereby giving up the final trick to dummy's ♠10
One can certainly argue (in fact Roland Wald did) that the discard of the ♠A indicates the ♠K and the rest of the tricks as well, but in the given situation, could there be any inference drawn by the order in which East cashes out? After three rounds of diamonds, everyone has the count in that suit, and therefore the order of playing them out could well convey information about the remaining cards in East's hand.
My suspicion is that Sveindal was sort of trying to show he had a spade by his ♦8-5-2 play, but that they had no such agreement. Does anyone here?