Not quite,
@Kneale Brownson -- Josh is engaging the inside ski through pressure. A pull turn, in contrast, engages the inside ski through rotary and edging. There's no doubt that pressure can also be an important portion of the mix, but I tend to think of the Josh element as more alignment oriented -- that is, aligning the base of support to the center of mass. Pulling the inside foot back is one way to engage the tip of the inside ski with the result that I believe Josh is describing in the video.
But what my coach (Jim Schanzenbaker) is looking for is something different. It is the act of driving that inside edge into the snow by rotating the femur externally and pulling the leg towards the body to increase the edge. The pull comes from that active abduction and external rotation of that inside femur. Since this is a closed chain movement (the inside foot is still on the snow) and because of the combination of abduction and external rotation, the result is to tip the lower leg rather than to rotate the foot. Without the abduction, the result would be to rotate the foot rather than move the knee into the turn and pull the inside ski into the turn.
It's not an easy maneuver to describe, but easier to demonstrate. I've tried to be more precise in the biomechanics involved; hopefully, it is a bit clearer.
Mike