Then, the political situation changed favorably for the sonjo (antiforeign imperialism) group, and as in other clans many persons involved in Ansei no Taigoku (suppression of extremists by the Shogunate) and Teradaya Incident were released, Yoshimura was also released in December of the same year partly due to mediation conducted by Tetsuma MAZAKI and so on.
やがて政情が尊攘派に有利になり、諸藩で安政の大獄、寺田屋事件の関係者などの赦免が行われるに伴い、間崎哲馬らの斡旋もあって同年12月に吉村も釈放された。