North/South reached a contract of 5♥, played by South.
West led the Ace of ♦, and declarer played low from both hands.
Then West switched at trick 2 to his 5 of ♣. Dummy played low, and declarer captured East's Jack of ♣ with the ♣Ace.
At trick 3, declarer cashed the Ace of trump.
At trick 4, declarer led a small ♣ from his hand, and won in dummy with the ♣Queen.
At trick 5, declarer led a small trump from dummy. East showed out, discarding a low ♦. Declarer won in hand with the ♥King, and West played a low ♥.
At trick 6, declarer led the Jack of ♥ from his hand, and West hitched for a second, thinking about whether or not to take his ♥Queen on this trick.
Observing this, Declarer then faced his cards, saying "I have to lose a trump to the Queen, and am otherwise good. Making 5."
West called the director, stating that he could win the sixth trick with the ♥Queen, then lead a diamond, which declarer would perforce win in dummy with the King.
Then, if declarer next led a low ♣ from dummy toward his King, so that he could return to his hand so as to extract West's last small trump, West could ruff and set the contract.
How do you rule on the contested claim?

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ing) tr. v. - Any bid made by bridge player with which partner disagrees.