Senshido: Richard Dimitri- Grab And Stab / Prison Trained Attack Methods [Extended] 

It's similar to the Don Pentecost's techinque in his book "Put them out, take them out", which is indeed based on "prison attacks".

i need to buy Richard Dimitri's DVDs. His stuff is by far the most realistic stuff I've seen on self defense.

Respect for the pressure test . I’m a fan

Agreed. If you provide a post for the thrusting hand - your forearm against assailant's forearm - the attacker will either re-enter the same angle or (if he's good) change the angle. If you give him no post by allowing the blade to get very close your body, the attacker will most likely feel that he/she has the stab and try to push it through. Either way, you've got ONE major opportunity after that initial post or absorption to counter before the blood starts spilling.

If you don't want to get stabbed, don't get into a knife fight... the bottom line of any fight is, be prepared to get hurt. The winner is the last man standing, not the last man uninjured.

It's like techniques for surviving a gunfight. Lol there's nothing you can do a bullet may strike you anywhere any moment in a gunfight no matter what you do