Rupert Atkinson wrote:
You can, and should, develop this power.
Reminds me of the progression from Nanahon no Kuzushi to the Ura Waza of the Nage no Kata in Shodokan. It starts off as kuzushi training and then develops into application of kuzushi to throw using the weak lines and then turning while breaking balance along the weak lines.
This is not only the ability to utilise inertia in a circular fashion, but targeted application of force to manipulate the arcs, circles and spirals while keeping Uke off balance imho.