Chris Li’s Part 3 of Analysing Aiki is a terrific read on unbalancing and the mental/physical connection between uke and nage. I think there might even be seeing some support for the humble Aikiphysics Base of Support and Topple theory, but this time from a credible source
Mr. Yoshimaru’s heels are floating, the center of gravity of the triangular body has been destabilized, the center of gravity has moved upwards and back.