MMOs in general, but EVE in particular, make you feel like you're part of something, which can be a huge comfort when you lose a job and some sense of self-esteem. Not to justify his behavior at all - I'd highly recommend getting him away from EVE - but I wanted to point it out.

I hope you guys work it out.

“Working” on quests in video games can feel very rewarding. Quitting EVE might be a good idea but I think should be complemented with something equally rewarding because otherwise they might feel empty and slide back into it. Developing that rewarding feeling might take time though.