Why would he do that? 70 is a big boy and can do it himself if that's what he wanted to do, lol. It was just a mess by the Lions. If you watch the video, 68 also touches himself on the chest as he's approaching the ref, albeit less demonstratively and appears to be talking to the ref too with his head bobbing up and down. But 70 running and doing that signal is probably the one that sticks out more to the ref so he goes with that. What 70 should have done was just run at the other 2 players there while not even looking at the ref and follow behind him as he's talking to the Dallas players as he kinda did. He did too good an acting job and convinced the ref.