I think a lot of Hammer on the PP is that Martin wants Gorges and Gill to match up against Ovie at all possible times. Ovechkin doesn't play the PK, so you know he'll probably be the first one out after the powerplay, which means Gorges and Gill need to be ready. That leaves 4 D to take 4 point slots, unless you put a forward back there; probably not the best experiment to try in a playoff game.