I think you missed my point. I wasn't pointing out different parts of the bump. I was pointing out that depending on your view, there are three places to see it. In my crude drawings below, #1 is a turn viewed from above, #2 is the same view turning in the opposite direction. #3 is a cross under virtual bump and the view is from down the mountain looking up at the skier. A crossover turn wouldn't have this virtual bump but it would have 1 and 2.
In a cross under your upper body stays at the same(ish) height but your legs extend and flex from side to side. So in a cross under you have the vb when you turn right, when you turn left and you have an additional vb because your skis have traveled under you from left to right in between the two turns. #3 starts at the apex of one turn and ends at the apex of the next.
The OLF drawing could be used to illustrate the cross under virtual bump.
No you are confusing Vaulting with Virtual Bump.....while obviously related they are separate concepts. It is possible to flex such that you reduce vaulting to effecitivley nothing....this is shown in TDk6's post 104 diagram...second one if memory serves.....but you cannot make the virtual bump disappear when turning on a slope....you can "work with it"....but you cant make it go to 0, unless you go straight, or are skiing on flat (ie not pitch) ground.....