There were times last year that Nassib had 10-15 yards of open field in front of him and he never thought of pulling it down and getting a 1st down with his feet. I believe DM told him under no circumstances is he to run the ball. I suppose there is a higher chance of injury if he gets tackled, but then why not just teach him how to slide effectively??
It was frustrating sometimes watching Nassib throw into coverage/miss a reciever when he could have got 10 yards with his legs. (like every other QB we play does to us)...