Conversation so far:
What was Hardcore 81 by D.O.A. the band?
Hardcore 81 is D.O.A.'s second album
who was fired from the band D.O.A. after Hardcore 81?
Randy Rampage was fired from D.O.A. on January 1, 1982
Who replaced Randy Rampage when he was fired from the band D.O.A.?
ex-Skulls drummer Dimwit on bass replaced Randy Rampage in D.O.A.

Question: who left the band to work for Black Flag?
Self-contained rewrite: who left the bandD.O.A. to work for Black Flag?