And then any person (east or west) could file a request "Tell me anything the Stasi knew about me". "Stasi" being the abbrev of the political secret police of east germany.
But truth be told: no one kicked the russians out. Sure, economically the FRG was "kaputt". But with a stalinist USSR they could have continued to keep the status quo. Maybe even without help: North-Korea is way more "kaputt" than east germany was. And they keep up the system since decades without soviet help. And also without much chinese help. NK is pretty isolationist, with few bridges going over the border river to China. So it's entirely possible that socialist states 1) stay in their self-selected prison due to internal forces.
It was to a good part the goodwill of the then-USSR (lead by Gorbatchev) that made the USSR troops return. I think west-german money also helped --- they asked west-germany to build housing areas in USSR for the soviet soldiers.
1) And here I mean real socialism, centered around the ideas that the "means of production" not in private hand. Uneducated US people often confuse a simple unemployment insurance with "socialism". And call countries like Denmark, Sweden or France "socialist". This only tells all of us that the general education in some countries leaves to be desired ...
lol what? Quite the opposite.
Ve called them "political turncoaters" (převlékači kabátů).