Good story!
Regarding the knife part, I had a similar experience in a force-on-force class a few months ago. It was a low-light scenario where I was armed with a cane (no gun).
I round the corner and there's the goblin (in a FIST suit). He asks me for money, I say forget it. He advances and sticks his finger in my face, asking again for money. I got two guys behind me, can't move back so I keep moving forward (like they say, if you stop you let them get position on you so keep moving). He lunges at me, I drop the cane (can't use deadly force on an unarmed man) and go into unarmed combat mode.
Instructors stop the simulation before it's clear who would have prevailed. I'm puzzled, until they show me that the "finger" he stuck in my face wasn't a finger at all, but a rubber knife (with blade painted silver). They stopped the simulation because I was dead -- stabbed by a knife I didn't even see.
So I understand -- I hate knives too, they seem to come out of nowhere on me.
Justin
------------------
Justin T. Huang, Esq.
late of Kennett Square, Pennsylvania