Mark, try to get the ski flat by the second wake. What Cord is talking about is the process of moving from leaning edge to flat to inside edge over the course of your "work zone". This has a lot to do with handle path. For example, if I lean hard at turn in (not recommending this!), the handle path is still coming back to you, so the load you perceive can be relatively low. However, if you want to maintain a constant load, you will have to start coming up, because the handle path is turning away from your ski direction. Holding on the pulling edge will cause separation. At the same time, transitioning to the inside edge too soon will diminish width (height) and will create an arc that, once set, is what it is. By controlling the change and holding your ski more flat as you exit the second wake, you allow the handle path to determine your direction (you are just a weight at the end of the line). This is the place you want to go. Make sense?
BTW, all that we were always taught about not riding a flat ski is hokey, particularly with ZO.