I doubt there will be any significant institutional continuity found between Werewolf and Neo-Nazism. Possibly no more than, say, that so far substantiated between Templars and Masons.
Even if all trace and memory of Nazism was expunged from the face of the earth, similar ideologies would still be formulated by some. Because all trace and memory of Nazism wasn't expunged, there remains a label to apply to them.
Ideologies are a permanent part of the human condition, rather like homosexuality, theism, left handedness, dwarfism, etc. Wipe out all their adherents, exponents or sufferers today and tomorrow they will begin to re-emerge amongst "pure" stock in similar proportions. The "pure" stock in this case being post-war West German liberal democracy.