Two sides of the exact same coin. Hitler himself repeatedly stated that communists would make perfect nazis once he'd have conquered russia.
National socialism and communism really aren't that far apart: Hitler did adopt 8 of Marx's ten major points of communism.
That an ex-nazi in free western germany would actually be a Stasi agent is really not surprising at all.
These kind of person are the ennemy of freedom and the ennemy of individual liberties. They'll do anything they can to work for an ever bigger and ever more restrictive state.
Socialists refuse to admit that national socialism was actually an ideology from left and keep telling that if Hitler was allied with Italy and Japan nazis were right-wing fascist. But that logic has its limits.
Statism is statism. Planned economy is planned economy. An article like this one only reinforce the notion that what I know is not wrong: communism and national-socialism are two sides of the same coin.
Hitler wanted to rule alone, hence his wish to annihilate Stalin and to convert russians into nazis. But it's not because Hitler wanted to replace Stalin that nazism suddenly becomes a free-market, liberal, ideology where individual liberties would be the most important thing.