c_corgi, on 2012-October-05, 07:25, said:
If it is unclear from the laws whether both sides have played to the next trick, but the card which may have met this criterion did not advance play in any meaningful way (as here) it seems obvious to err on the side of unwinding the play so that the correct card is played.
It seems to me once you have two cards face up on the table, you have just as much an unwinding job whether they are played regularly or irregularly. So whilst I agree with your initial sentiment, I come to the opposite conclusion.