Neither East nor North shone on this other hand from the Speedball teams at a national congress. South was again the SB lookalike, and E/W walked out of the event after this hand. The delays from that action, from finding a stand-in pair (And friends, the story is true. I know, I was that soldier) and from two rulings caused the fifth round to be cancelled.
North gave the wrong response to kickback and South drove to slam. East led the ace of diamonds out of turn, attempting to cut down on ruffs in view of his heart holding, and South, our SB friend, called the TD despite it being a Speedball. This time the TD was careful to cross every "t" and dot every "i", clearly explaining all the UI implications, and declarer elected to have the ace of diamonds left face up, but West could lead what he liked. West led the eight of spades. Dummy played low and East played the jack and South won with the ace and played a low diamond and West was unclear whether he could play low or not, but did. After 6♦ had gone one light, SB wanted the TD again. He said that playing the king of diamonds was an LA for West - South could have ATx AQxx Axxxx Ax or the like and rising with the king of diamonds was an LA. West thought he was entitled to know that East had to play the ace of diamonds on this trick, but SB disagreed and asked the TD unusually politely for a ruling. He argued West had to pretend that he could not see the ace of diamonds, and that West could only know that East had some unspecified penalty card. How do you rule?