South opened 2♣ in second seat and the East-West pair passed throughout. The calls were:
South: 2♣
North: 2♥
South: 2♠
North: 3♣
South 4♣
North: 5♣
South 6♣
South claimed 12 tricks at trick 6. The claim was held up by a defender who pointed out that South's 4♣ call was self-explained with the word 'cue.'
Obviously 4♣ is not a cuebid, it shows support for partner's clubs. The partner never saw this explanation as it was a cuebid, and with all pairs playing the same system, so the defenders knew only that South might not have fully understood the meaning of his bid.
The objecter was asked to explain what he would have done differently if given a better explanation of the 4♣ call. Instead of responding to this question, he repeated that the explanation of 'cue' was an infraction. I asked that the claim be accepted and asked again what the objecter would have done differently. He now pointed out that 2♠ should have shown five spades, which is true but doesn't answer the question asked.
I conducted a private conversation with the objecter over the next three boards, and the player did not give me an answer that would lead me to believe that he was going to change any action if the explanation had been correct. I ruled no damage, no adjustment, and fielded more irate comments.
At the end of the game, the South player had finished 4th of 68 players. The objecter sent me this message:
"nice to finish 4th...with lot's of support"
It seems to me that this player was just frustrated that his opponents bid a slam that couldn't be beaten and seized on the self-explanation to try to avoid a bad result.
Have I missed something?

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