As you previously stated, intent is an important component of the mix.
I would suggest that the ability to "topple and recover with precision" is in fact part of being in dynamic balance that allows the expert to make effective use of the skis. It is intentional, and it is effective.
I might also suggest that it is an example of the balance process as described by Larsson and Major.
If the concept of balance is expanded to include effectiveness, function and intent, such moves are not out of balance at all from a skiing perspective.
From a pure physics perspective, any body for which all the forces acting on it are not in equilibrium is not in balance. Any other condition causes acceleration, a term that includes increasing speed, decreasing speed, changing direction, etc. A body that is accelerating in any sense of the word is not in balance. I don't find this to be a particularly useful definition for skiing, since skiing involves continuous acceleration. This may be why JASP doesn't like the term "balance." As far as physics is concerned, it's a pretty specific and limited concept.
and the justifications for skiing out of balance continues....
I give up...