Conversation so far:
Why did Mark Barney Greenway leave the band, Napalm Death the first time?
Mark Barney Greenway was expelled from the band in 1996, and went to record with fellow grindcore act Extreme Noise Terror.

Question: Ok. Then why did Greenway come back?
Self-contained rewrite: Why did Mark Barney Greenway come back to the band, Napalm Death?