Charlie, one thing we were taught in law enforcement, is to speak softly, not yelling. A soft voice they have to stop and listen to what you are saying. Yelling only makes the problem worse. That's true with your wife as well! I don't always remember though! Shame on me.So not to be that guy but one why didn't you already have a round in the chamber and two why draw your gun? Why not just try yelling at the dude to see what his reaction is. My SIL knows better than to ever touch my daughter. I made it clear the day they got married. You touch I touch and that he wouldn't like it.
I agree a round in the chamber, and sometimes a show of real force is all that is needed.
But I learned how to talk violent persons out of their rage. I am not a large powerful person, but I've been able to talk some dangerous people into getting into my patrol car No force involved. and we didn't have cages back then either! .
Add to that I hadn't cuffed either one! I had a great Sgt in charge that night and he helped de-fuze the situation without arresting either one!
The COP felt the cages gave the wrong impression to the public, never mind the safety of his officers!!!!!