Yeah that's true. Churches had a special role in those political changes. The former pastor of my chruch, and now mayor of my city (so much for preachers getting into politics lol) was very involved. They held lots of politcal gatherings in our church (long before I got there, so I only know it from indicidual people's recounts of the events).
Churches were a force of opposition in the socialist Eastern Germany, because they were seperated from the "normal" society. And in this position they attracted all other kinds of dissatisfied people and became a parallel society, not only for christians, but for any sort of free thinkers that felt uncomfortable enough with the GDR everyday life and worldview to risk trouble and discrimination (because that's what you were likely to get when you got caught getting involved with christian organisations).
Also our protesant churches received considerable fundings from their west German brethren and so they did rather well. Western money could open doors even to the most convinced hardline socialists' hearts (is it okay for a christian to bribe someone?
)
So the East German protestant churches were among the most prepared groups when the political changes began.
Not I, I was born too late for the real philosophical indoctrination. My socialist indoctrination went only as deep as to painting crayon pictures of the friendly and kind Soviet soldiers.
Later, after the fall of the wall we learned about all the philosophical background of communism, but at an academic distance.
Edit: Are we off topic yet?