MichaelI'd be very interested in hearing some of the details about the inward block, just what the technical differences were and what apps you discussed... any chance of getting you to flesh out those intriguing comments above, a little bit anyway?
Sure!
Basically, I had been doing my inward block with a movement that essentially goes in a path across the front of the torso. The block would intercept a punch at a roughly 90% angle. In addition to this, I would rotate thru my hips and waist as I would settle into stance, and use the power generated by this rotation to aid with the block. The final position of my blocking fist would be essentially palm facing my face.
The way Mr. Sumner was having me do it, included stepping back and settling into a solid horse stance. I immediately noticed the difference in that he was NOT instructing my to use a Neutral Bow, which seems to be the stance favored by the EPAK kenpo people, as I have seen in the discussions here. He touched upon that briefly, and feels that the Horse stance is more stable, tho he acknowledges that it sacrifices a small amount of mobility. It seems that he recognizes these sacrifices - no stance, or other technique, is perfect in every way. Everything is a compromise in some way, and as long as you understand that, and work with that understanding, it is fine.
At any rate, I would step back and settle quickly into a horse stance and fire off the inward block more like I was swinging a hammer to pound a nail (not exactly, but somewhat). It was slightly more "overhand", swinging out and more foreward to meet the incoming attack, and striking with the blade of the bone in the forearm, on the pinkie side. The final position of my fist had the thumb facing my face. In this way, the block is really being used like a strike, in addition to the blocking benefit. This movement also took advantage of the pivot that happens when you settle into the horse, and solidifies the technique by having it anchored to the torso.
From this position, he also discussed the differences inherent in how you hold your back hand in a guarding position. He feels that it is better to keep the back hand open, guarding, instead of a closed fist. He believes that the "flinch reflex" is significantly removed when the hand is open, and makes it easier to deal with an attack that slips by the block.
I hope I have characterised this accurately. I am sure my understanding of this will improve as we work on it.