
Originally Posted by
BillSWPA
That does make sense, and I agree it is very difficult to defend against.
The reason I mentioned it after hearing the comment about overhead is that I was previously taught what I believe to be a very good response to an overhead attack, and became very good at that response. Then, I (perhaps foolishly) injected myself into a domestic situation in a neighboring apartment. As I was in the hallway listening and attempting to determine exactly what was happening, the man who was beating up the mother of his kid walked out of the apartment. He saw me, tried to tell me there was no problem, and went back into the apartment. Neither of us realized that when he stepped outside, the lady retrieved a knife from the kitchen. He immediately exited the apartment followed by her (wearing a night shirt and not much else) making use of the knife in reverse grip, using a straight thrust. He made some weak, ineffectual attempts to grab the knife, and was then chased out of the building by her. Deciding she had things under control, I went back in my apartment. (She later thanked me for attempting to help.)
As soon as I saw the attack, I realized that the technique I had been taught would not work against that attack.
Since that event, I have also seen SouthNarc's posts about the Pikal system on another forum. That system relies on a reverse grip, edge in thrusting motion. If a thrust is blocked, it presents an opportunity to simply withdraw the knife hand, taking some flesh from the blocking arm in the process. While this system may not be that common, it should be kept in mind when planning a defense against such an attack. The system also appears to have significant merit when used by a single armed defender against multiple unarmed attackers, which I understand from SouthNarc is a common defensive knife use.
My first thought would be to attempt to deflect the first thrust off to the side (or downward) it is already moving towards, and attempt to gain control of the arm immediately after the deflection, when the blade is hopefully pointed away. However, that would not work against someone who is thrusting and retracting immediately for the next thrust. Perhaps a carefully timed entry, during retraction of one stab attempt, would present an opportunity to jam the arm and grab it as you describe. I have not pressure tested any of this, and such testing would likely reveal some good chances to get sliced in the process.
It is an interesting problem, and one I should have thought to try to solve and pressure test before now.