Well, he is with his legs, anyway. Seattle's containment scheme of him thus far leaves something to be desired.
The niners just don't let him run like this. They know if they want to win this game the advantage is with his legs and they are going to the well with it over and over. I love it. He is literally the fastest player on the field. I don't think the hawks thought he would do this. This should open up the passing game. Love the game plan.