Through these connections, the Date Munekatsu and Tamura Muneyoshi accused Tadamune of drunkenness and debauchery, who then removed from office for misrule and was confined to a secondary clan residence in Edo.
According to waka poetry written about him, Muneyoshi had a mild personality and was popular, in contrast to the events of the Date Sōdō.
Events reached a climax in 1671 when Aki Muneshige, a powerful relative of the Date clan, complained to the shogunate of the mismanagement of the fief under Tsunamura and his uncles.
In the ensuring Date Sōdō, Muneyoshi was relieved of his offices in 1671 and placed under house arrest.
He died at age 42, and his grave is at the clan mortuary temple of Tōzen-ji in Takanawa, Edo.