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.
Why did Mark Barney Greenway come back to the band, Napalm Death?
After discussions between Mark Barney Greenway and the Napalm Death, Greenway returned to record the vocals for the album Inside the Torn Apart.
Is there an album called Diatribes by the band, Napalm Death?
Diatribes is the sixth studio album by Napalm Death, originally released in 1996 on Earache Records.

Question: Who replaced Greenway while he was gone?
Self-contained rewrite: Who replaced Mark Barney Greenway while he was gone from the band, Napalm Death?