It's not about what should you do. It's about what he should do and does he want to do it-quit/sober up.
With cocaine and other stimulants involved I'd be leary and STAY SAFE. Too much of the drug or they are already in a bad mood could escalate aggressive behavior real fast.
Darn, pesky nit pick alert. Helpful hint for any message board is a few paragraphs which makes it easier to read which means more people focusing in the details. I'm guilty of long rants and paragraphs myself. Sometimes just stepping back from the post for a minute and reading from the start helps.
STAY SAFE