The rotation must be carried out in the way that undoes the grip. To do this, you must rotate by cutting on uke's lower arm. Cutting on uke's upper arm is a mistake that has the effect of locking uke's grip even more tightly, and thus increasing the power of his stranglehold.
The movement of Aikido (tai no henka) perfectly combines two requirements that are unrelated at first sight...
Rotation is the energy of Aikido movement, and this energy always develops in two opposite directions.
Aikido has become kawaii, cute. It is not legitimate to keep the name Aikido, because it is not the art developed by the founder Morihei Ueshiba.
