Realising fully for the first time what he’d signed up for when he joined the S.S., Heinz was horrified. He burnt most of the papers in disgust.
Soon after this event, Heinz began to realise that he was in a truly unique position. Being the brother of a prominent S.S. general (albeit, a dead one), and being the editor of the party newspaper meant that he had a lot of influence. He used this to help as many Jews as possible escape from Germany. As a writer and editor of the party newspaper, Heinz had access to a commercial printing-press. He used this to print fake travel-documents which he signed and forged and stamped, and gave to Jewish families, so that they could escape from occupied Europe to countries of safety.
When in November 1944 an economic commission headed by a State Attorney investigated the editorial staff of Panzerfaust, Heinz Heydrich thought he had been discovered and shot himself in order to protect his family from the Gestapo. Ironically, the attorney knew nothing about the forgeries, and was only trying to find out the reason for shortages in paper supplies. Heinz Heydrich is buried in the Soldatenfriedhof (soldiers cemetery) Riesenburg, according to the Deutsche Dienststelle (WASt).
Heinz Heydrich had five children. His oldest, Peter Thomas Heydrich (1931–2003), was a well-known German cabaret singer, and wrote a book about his childhood, father, and uncle. In the book, Peter Heydrich describes how, as a youth, he enjoyed the fame of being a “crown prince,” the nephew of Reinhard Heydrich. During boyhood, he thought of his uncle as a successful sportsman and a sensitive musician. In Prague, Peter observed that his uncle had become a “high animal.” Peter derived many privileges from being Reinhard Heydrich’s nephew. Even after the war, Peter still felt some pride in the familial relationship, if not so openly. But finally, Peter Heydrich had to admit that Reinhard Heydrich was a protean schemer, who planned and executed the Holocaust and other crimes.