re: The ref was supposed to run in stride alongside Dak on the QB run.

I have seen athletes and coaches talk about these last second plays and typically speaking after a play they want to have at least 10 seconds or more on the game clock in these situations. In addition to that you need to find the umpire and hand the ball to them. When Dak got up with seven seconds left it was an absolute crapshoot. Everything has to go perfectly right to work; it’s just too risky.