Yes do! I think too many different things have been lumped together in "the fall of the iron curtain". Every country of the "Warsaw Pact" (NATO speak) was in a different state with different problems, e.G. Poland had a strong opposition with the Solidarność movement, the GDR had some opposition with a environmental movement (which later became the freedom movement) (I don't know about Bulgaria and Hungary etc).

What unified them was the threat of the Soviet Union to intervene on behalf of their governments if there would be danger to the state.

When that threat broke away with Gorbachev, the states collapsed at the same time in different ways (e.G. Ceaușescu was killed, Honecker went into exile) and for different reasons (although the overall driving force for more wealth and freedom was the same).