Well Max...we differ on what we are seeing in that particular video. In the video you posted, I see the front of his skis clearly lifting up and off the ground during transition..and that in itself is not the movement I'm referring to.
I've always thought of the pole plant as a concert conductors baton...it sets the timing for the orchestra. Translating that to skiing, I see the pole plant or touch function to set the timing for speed of transition. IMO anything other that a light touch or even brush of the pole tip in the movement we've been discussing would be counter productive to producing a rapid fire rotation.
I've never seen a written description for what I'm describing as a blocking pole plant. Maybe it's the word blocking in this application that's throwing me off. But my mind is an open sponge to learning.
When I've see JC do a series of 5 or 6 of these in a row, his arms are to the side and the poles hanging straight down, no wrist flicking or swinging pole movement.... it's just touch touch touch touch....with each touch the skis swing right then left then right then left......for this movement, it's so freakn' fast and amazing to watch and more so when I could link 3 or 4 together.
Best, G