On April 14, 1944 Speer lost control of Organisation Todt to his Deputy, Franz Xaver Dorsch. He opposed the assassination attempt against Hitler on July 20, 1944. He was not involved in the plot, and played a minor role in the regime's efforts to regain control over Berlin after Hitler survived. After the plot Speer's rivals attacked some of his closest allies and his management system fell out of favor with radicals in the party. He lost yet more authority.