He was too afraid even in the times where he already delayed too much. At one point I believe he had the warlock at 14, could have hit with the slime to 13 for lethal next turn with holy fire but still didn't attack at all.
Basically he was so afraid of a move that was going to happen at SOME point that he delayed so long that his opponent got all the cards he needed to pull off the move he was trying to avoid. It was a total misplay and goes to prove why you need to go in for a kill when you have the chance. He already reached a point that his field was going to be cleared either way. He should have taken advantage of it when he had the chance. Thank god for the Harrison or he would have died long ago.