I'd say in this case, you could subdue him until the police arrived or the situation changes.
Sure, thats an option.
Thing is, you guys are adding a lot of fiction to a nonfiction story. If you are inventing a hypothetical, then more power to you. But you guys don't know the whole story here. What we do know is that in this situation, as with the other two I linked, it worked. In real life.
IMHO, I dont think that i'm adding in alot of fiction. I think that i'm adding in alot of very real possibilities. I hope Steve, that since you're a BJJ guy, that you dont think that I'm slamming the art. I think you know me better than that, from my past posts. In this situation...sure, it worked out for the guy. However, IMO, I wouldn't go so far to say that because "A" worked in situation 1, that "A" will work in situations 2, 3, and 4. It may..it may not.