I don't know why it's so hard to just give him a run up the middle. They did this last year, one carry I remember in particular was his TD run in the Philly game. He still has the speed to close the distance to the LOS. If they would call a play for him to run straight ahead he would get positive yardage. Instead they want to give him plays that are just going to feed into those instincts that he has always played with. If you want a player to do something, just give him a play where he has no choice but to go forward.