It's a bad rule, but not a bad call. The officials called it as the rule is written. IMO, I think it's ridiculous. That being said, if you're Calvin Johnson, why are you worried about breaking your fall? if he catches the ball with 2 hands and falls on his butt, it's a TD, no questions asked. instead he tries to break his fall with one hand, causing his other hand with the ball to hit the ground popping the ball loose. So in summary, bad rule and bad decision...