How had things gone wrong for Donovan in Chapter 26?

Things had started going wrong for Donovan. First an unfounded rumor was spread that Donovan was having an affair with his daughter-in-law. Truman already did not like Donovan, and this displeased him even more. Then a 59 page report listing charges of gross mismanagement and incompetence within the OSS was manufactured by Donovan's rivals and sent to Truman. Then Truman shut down the OSS.