The first time through I was pissed and horrified. Going through the second time I can see that the "hand" was playing to the camera. I've seen hundreds, probably thousands, of these low IQ goobers who, once you get them started will do anything to show how tough or uncaring they can be. They would beat their wife or kids to a pulp just as easily and grin all the while. The three second cut of the owner is nothing out of the ordinary until you splice it in with the absolute barbarity of the loser.
I think that the "hand" should do time along with the cameraman who goaded him to do this.
One of the most dangerous things that you can do today in America is to hire an employee. The chances are good that you will end up with something like this moron to one degree or another.
It looks like the idiot sadist in the video was “showing off” for the camera person. He seemed to delight in coming up with different methods of torture and inflicting pain. From a business point of view this makes no sense at all. From a personal point of view the creep in the video is a text book sadist.