Some of you may be familiar with Jim Wagner. He's a police officer who also teaches and writes for Black Belt every month. He also has some new DVDs and a book out through Black Belt.
I was reviewing an older video he put out a few years ago that had his four rules regarding knife disarms. It basically teaches a drill and his four rules.
1. Grab
2. Close
3. Take Down
4. Escape
The drill goes like this. Person is in a corner, so you can't run away, or do as many evasive moves. Attacker comes at you with a knife. Attacker comes hard with any attack and keeps attacking with multiple slashes/stabs. The attacker does whatever he wants to do to kill you. Wagner does not teach any specific techniques, he just has you do whatever you can to keep the knife away from vital areas which is mostly slap type blocks until you can grab the arm that is holding the knife. He then teaches to close with the person immobilizing the arm and preventing the attacker from moving and continuing the attack. He does teach that you may get cut during this, but it should be minimal to the damage that could be done. After closing, he teaches to throw the guy down and then escape, don't go to the ground and try to wrestle with a guy with a blade.
I found that actually doing the drill worked in many attacks. Yes, all of us doing the drill took cuts, etc. But backed in a corner with very few alternatives, the grab, close, takedown, escape worked. And trust me, if you are backed in a corner with no weapon faced with a knife, you don't have many alternatives and will have to do whatever you can to survive. Needless to say, it is a situation you do not want to be in. One more reason awareness and avoidance are so important. But if all else fails, having trained in this drill, and remembering Wagner's rules could save your life.
One thing I noticed, after people grabbed the arm with the knife, if they didn't close and get better control of the person, sometimes the person would fight out of the grab and continue to do damage to the person. Grabbing and closing and controlling the arm fast is the key. Everything is going to happen in a blindingly fast second. You can be dead, or you can survive in such a short time.
I think this was a good video, and it is a good drill. There is also validity in those rules that can save your life.
Stay safe!
Alain