That is b.s. The way that cop reacted was not to protect the owner. In the video that cop stepped backward as he was firing. If he was protecting the owner why was he stepping away from the bog? But I tend to agree with the beginning of your post. I simply would have not hung around that situation with that dog around, I know how those dog are, we had one, and you just don't... You just don't do what that guy did.
It is better to look dumb and not be, than to look smart and not be.