he's going to get his money from the show as he hadn't breached his contract so they'll have to pay him out.
I think his current behavior would put him solidly in the realm of "terminated, with cause". Repeated drug and alcohol issues, verbal abuse of coworkers, public image issues, and all that, surely violate some clause of his contract which amounts to, "your employment is contingent on you being sane enough to work with".
Plus he's got super endorsement deals now...
Yes, his Ad.ly gig may earn him a million dollars a year. But, his part on the series got him a million dollars *per episode*. He'll need 20+ such deals to equal his previous income.
And, the endorsements won't last, because the public has a short attention span.