 Zwanziger is married and has two sons.When the renowned sport journalist Jens Weinreich called him an "unglaublicher Demagoge" (unbelievable demagogue), Zwanziger unsuccessfully asked the Landgericht Berlin (country court of Berlin) to issue a temporary injunction against this statement.Zwanziger later publicly announced to go to the court of Koblenz, his former place of work for another attempt, resulting in further criticism from the press and journalists' associations.