Well if the ref sees it then yes, Koskinen's issue was that he was off the side. If he's at the back of the pile he has more of a case of being pushed in, but instead he just leaves his defense to fall on the puck in the crease and try not to put their hands on the puck.
At some point I would expect one of our guys to just grab the puck near the goal line and give up the penalty shot. Bieksa said it well enough, if the ref can mostly see the puck at intervals, it's pretty hard for him to blow the whistle with only Oiler players in the crease lying down, without also giving a penalty shot. The Goalie being off in Abbotsford helps too.