Question 076: Faked demo

I watched the video clip Blotched Self-Defense Is Worse Than None At All and could not help but come to the conclusion that it is probably fake. Pause it at 48 Seconds, the point where the shot JUST goes off. Notice that the shooters arm is entirely free. The gun, as well, is free and no attempt is being made to grab the shooting arm or the wrist or even his hand or gun. With 3 people on him, each one of them (I would think) would have tried to grab the gun arm and stabilize it while pinning the man down. This video seems fake. I guess the men could just have been really stupid. Even the part where one guy had the shooter by the hair. Why didn't he just pull the guy’s head to the ground and hold him down with his friend? I have seen a lot of videos on cop shows like this one that are obviously faked. There’s no law saying they can't be faked.