UPDATE:

We now have a better idea of why Dez Bryant and Greg Hardy got into it on the sidelines during a game last night. In the video above, you can see that Hardy actually got into it with Cowboys special teams coach Rich Bisaccia first. It seems Hardy was very upset with the 100-yard touchdown return that Dwyane Harris scored to help the Giants beat the Cowboys, and he took it out on Bisaccia by yelling at him, slapping a a clipboard out of his hand, and pushing him. At that point, Bryant intervened and Hardy responded by yelling at him, too. What a scene.

See original story below.

A still-injured Dez Bryant spent the afternoon on the Dallas Cowboys sideline today, taking in his team's game against the New York Giants like any good teammate would. With the score tied 20-20 in the fourth quarter, former Cowboy Dwayne Harris returned a kickoff 100 yards for what would end up being the game-winning touchdown. As you might expect, the Cowboys were upset. And especially upset was defensive end/insane person Greg Hardy, who began losing his cool as the special teams unit made their way over to the sidelines, as you can see below. Hardy could be seen shoving teammates and even coaches, all who were just trying to calm him down. 

Bryant, who's been known to flip out on the sidelines himself, followed Hardy to attempt to calm him down, which went about as well as you might expect. After a brief shove, Bryant left Hardy to stew by himself and ended up walking away. Greg Hardy is forever going to be terrifying, and as the Cowboys start slipping without their star quarterback and wide receiver, don't be surprised to see more of this from a Cowboys team full of large personalities. 

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[via The Big Lead]