Esteemed Joe San,
I have heard many times the story of Koichi Tohei's separation from the Aikikai(usually the Aikikai view) and of his open letter to the Aikido community, explaining his reasons for that. Also, I seem to remember there was an answer from Tadashi Abbe Sensei.
Where can I find the complete texts of those letters?
Best regards
Yamantaka (aka Ubaldo)