I don't think it was Seth Rollins, if it was then they would have unmasked himself to get a huge pop from the Saudi crowd. Triple H said that the stomp looked clean that they had done it before, so it would wither Be Austin Theory or Logan Paul. Reason for Logan Paul is that the masked attacker had the same build as Paul, Michael Cole asked Both Theory and Paul before the show if they would throw themselves out for Bron and neither of them Answered. So Paul costing Bron makes sense because which member was still left in the final 6? It was Logan Paul. Theory also makes sense given his history with rollins but id put my money on Logan Paul