Mert, there's a lot going on in this video. It's reversing nikyo. Someone wants to apply nikyo on uke. Uke then is on the outside of the sphere and under centripetal force from nage. But in this case, uke changes something... He flips the polarity - changes the phase - of the power. From there, uke becomes the core - and creates centrifugal force and nage is moved through centripetal force.
The interesting part is - what is that switch - that reversal? What changes the phase, the polarity?