Conversation so far:
What was Josh Homme's legal issue?
In 2004, Homme was arrested for assaulting Dwarves frontman Blag Dahlia.
Why did Josh Homme assault Blag Dahlia?
Josh Homme refused to be pinned down on the specifics of what caused the attack.
Was Josh Homme convicted of assaulting Blag Dahlia?
Josh Homme was sentenced to three years' probation with community service, and was forced to enter a rehab program for 60 days.
Did Josh Homme obey the court orders to do community service and enter rehab?

Question: Was he clean after rehab?
Self-contained rewrite: Was Josh Homme clean after rehab?