If Lord Elleray says it shouldn't be a caution, it shouldn't be a caution.
I joke of course, but there is an element of spirit of the game here. If a team has just conceded a goal do you really need to go back and give them a double punishment for issuing a caution for SPA that clearly didn't SPA as the other team scored. Can you imagine the discussion - "what's the card for", "you stopped a promising attack", "no I didn't, they scored". Sometimes you have to look beyond the laws, after all they say the keeper can't hold the ball for more than 6 seconds but you don't apply that rigidly.