Just for argument's sake...I just think it's a good discussion. Once you catch a kickoff, you have the option to return it or down it in the endzone. Downing the ball requires a knee (or other body part) on the ground, or a fair catch signal. Those are the only acceptable ways to down a caught kickoff. The guy didn't do either. Instead he gave airplane arms, took a couple steps forward and tossed the ball toward the ref.