This is misleading. The critical point is that Barr followed through on the tackle, well after the ball was away. His full body weight plus momentum was applied as Rodgers' arm hit the turf. Barr could have pulled up and lessened the blow, but he did not. I'm glad he was knocked out of the game (probably through his own idiocy). If he plays in the second game, the O-line needs to pulverize him.