Since Tamekuni joined and sided with an ally in a rebellion against the Amago clan, which was led by Okihisa ENYA, the third son of Tsunehisa AMAGO, Tamekuni's Fujigasejo Castle was again attacked by Tsunehisa AMAGO in 1531 and Tamekuni MISAWA and his followers were held captive.
しかし、経久三男の塩冶興久の率いる反尼子同盟に加わり、興久の反乱に加担したため、1531年に尼子経久に藤ヶ瀬城が再度攻撃を受け、三沢為国らは捕虜となる事態も起きた。