That video is important to show new shooters how to prevent injuries lol! But a basic understanding of auto pistol operation should dissuade anybody from doing that kind of thing anyway. More important, especially with the 1911, is a good firm grip. Dry firing is essential. Every shooter needs to be able to drop the hammer without disturbing the sight picture. The other first rule is to focus on the front sight and not the target. Accurate shooting is impossible otherwise. Locking the wrist and elbow are also good ideas. And when shooting with one hand it's good to start with the thumb and little finger away from the pistol until you get the hang of it. These fingers can cause shots to be thrown off target when shooting with one hand only. Eventually with practice you can use your pinky and thumb to provide for a more stable firing grip. I learned all this as a young Marine on the 2nd Marine Air Wing Pistol team. I used these basic rules to place on the Marine Division national match course. Real men don't need two hands to fire a pistol!