I'm sorry, you have a blind spot where Dele is concerned. He went down under no contact in the box, if it had been a Liverpool player who did the same we'd all understand it to have been an attempt to draw a penalty. The fact that Moss saw it for what it was and blew his whistle before Dele had a chance to raise his hand is irrelevant. Note that Dele himself had no complaints.It doesn't matter why he went down, a player is allowed to fall over whenever they want, there's no law about that. If he appealed then it should obviously be a yellow, as that would be decieveing the ref, which is what the card is for but dele didn't deceive the ref.
Doesn't mean dele was in the right but he shouldn't have been yellowed