In 1550, Yoshitaka conspired with Motonari to support the pro-Kagetaka faction lead by Kageoki NOMI, held Shigehira in custody under suspicion of naitsu (engage in secret communication) with the Amago clan, and forced him to retire and enter into priesthood.
天文19年（1550年）、義隆は元就と共謀し、乃美景興を中心とした隆景擁立派を支持、尼子氏との内通の疑いで繁平を拘禁し、隠居・出家に追い込んだ。