Ellis Amdur wrote:
4) No one has been able to trace the origins of Osensei's jo kata. (Solo forms are very rare in traditional ryu.) It is my belief that the kata is Ueshiba's form of misogi (purification ritual) mixed with elements of weaponry he learned elsewhere. (The circular movements at the end of his kata with the spiral upwards is very often seen in Shinto ritual).
Thank you very much for posting Mr. Amdur. I had felt something like this for a long time but couldn't put my finger on it. I went home and trained after reading this thread and I came to a complete realisation of O'sensei's approach to Aikido training. Purity.