Pretty sure he's referring to Murphy's tendency to initiate a Selwood type free. Got a couple on the weekend where he was tackled around the upper arm and lifted the arm to push the tackler high.
Personally I'm happy we've got a player on our team willing to play smarter. The umpires will keep paying them so might as well do it. Wrighty used to do it, Knight has jagged a few over the years too. I hate seeing it in the game, but while Selwood's around the umpires can't help themselves but pay it so might as well get on the gravy train.
Murphy might challenge Knight as our resident flopper/ducker.