When Heidegger became rector of the University of Fribourg he set about to Nazify it. He resigned his rectorship in 1934 immediately after Hitler and Himmler liquidated Rohm and his SA in what is called the Night of the Long Knives.The timeline's the reverse. Heidegger resigned before the SS liquidated the SA. If he hadn't, he'd likely have been rubbed out too. The question is: who tipped him off? One of his secret lovers, married to an officer in the SS, I expect. I think there's a screenplay there. Is Margarethe von Trotta available?