Thanks for your input.
I actually was thinking about smoothing the inversion to something less drastic, but ultimately decided against it, as had some problems regarding user experience with it. In other words: Without a snappy change I couldn't pulled off the inversion as I did now during the jam session time.
I also decided against using snapping horizontal movement as it would substantially decrease the effect I was aiming for. (This also would partially affect the relaxing part)