Well, I didn't shoot the stick out of his hand. After all, I have a pair of Sigs and no Glock.
A little more backstory to illustrate what could have happened. It just so happened that evening that my old lady and myself were returning from the range as it started to get dark. I had enough firepower in the back of the van to hold off Canada's elite armed forces (all 1000 of them

) . I forget what the reason was at the time, but my hands weren't full of anything since I was going to get a better parking place or something before unloading.
The dude himself wasn't ready to be reasoned with - I didn't even bother. He kept on swearing and hitting the walls and generally being bizarre for an extended period of time.
We backed off and got out of the building, as he had not just the stick as an advantage but we'd have had to go up about a dozen stairs to get to him. It's a no win in my book - a clear shot, yes, but I wasn't going to subject the old lady to a graphic tour of what the insides of a nutcase looked like.
I realized I now had two problems: nutcase who could come up on the van before I could safely drive away, and securing the safety of a dozen firearms and the old lady at the same time. It left driving away for me out of the question, and I didn't want to leave the weapons unattended.
I sent the old lady to go find the first pay phone she could get to and call the police, which was a few blocks away, climbed into the back of the van, and waited.
I grabbed the AK, a 75 round drum, and kept a clear line of sight on the front of the building since I had less than a 30 ft distance between the lobby doors and the back of the van. With both rear doors open, I had a clear view of the oncoming traffic, since we were on a one-way street, so I could see the police cars coming and wouldn't be mistaken for a nut with an AK, and keep an eye on the front of the building. I was also shielded from direct view from anyone within the building.
I have no legal obligation to retreat in this state, nor do I have the ability (right ankle is no longer functional in any sense of the world) to do so at any real speed. I can walk and that's it.
About 20 minutes pass. The old lady comes back long before the police arrive. We wait. It takes a half hour. I put down the AK discreetly, and nobody ever notices.
The first responders arrive, and take another half hour with the remainder of the police force here in town to talk the idiot down from getting himself killed.
It turns out the landlord decided to rent to a gentleman with Tourette's who was profoundly unstable without telling any of the other tenants. The landlord laughed when he heard I'd called the cops and wondered why I was so threatened by the stick - until the detective said I'd been remarkably reasonable for not shooting the guy because it was a weapon.
After spending a couple nights in for observation, I never saw the dude again - which is just as well because I didn't want to deal with confrontation #2.
The upshot of the story was the humor in unloading the van of all the weapons with the local police present - one of the newer members of the force asked to see a couple not for the purposes of investigation but because his wife wouldn't let him have the ones we were carring into the apartment.
All in all it worked out well, even if the landlord was a little afraid of us until we moved out.