Rick, I think I've figured out where we've followed diverging paths on this topic - I just need to pull together some graphics to put things in perspective.
The highlighted text seems to be where we are not on the same page. I think Gravity can assist this whole thing - the idea I tried to present with the 'Ballistics' concept.
Specifically - Take your current visualization and incorporate a slope dropping away from the skier...
In this case, if the skier's overall momentum is outward - away from the slope then the slope may be dropping away from the skier slightly faster than the skier is "falling". In short, the distance between the skier's body and the skier's skis is getting greater as they progress into the turn.
Does that help?
With the deep flexion of a retraction transition, straightening of the outside leg requires a lifting of the CM. Gravity is not prone to help a skier do that, and Centrifugal force will only if there is a lateral imbalance, which will also cause a skier to lose edge angle, when at the top of the turn they are trying to do the opposite.
It is certainly easier the feel than explain but I can see how in comparison in your montage of the aft stance demo, you may feel the need to make a more vertical movement to catch up, where in Bob's montage his movement appears more lateral and linear, demonstrating a higher level of skill and dynamic balance. The skis accelerate out to the side while the cm simultaneously short cuts harnessing both momentum and gravity to compliment the trajectory. voila, dynamic balance.
sorry wife is calling must end now...