As someone who is currently in the medical field, Chip's long history of manipulation, stealing, and lack of remorse makes me think that this is more of a personality disorder that he is dealing with, specifically antisocial personality disorder, than purely just depression. While he may have a mood disorder, his 20+ years of taking advantage of people speaks more to a personality issue than just major depression.
While it still is a mental health issue, personality disorders are generally harder to treat with modern psychiatric medications, but there has been good results shown with long term therapy.
Whether Chip is truly getting help for his mental health is anyone's guess. I for one hope he is getting the help he needs and that he is being evaluated by a doctor who can diagnose and treat this kind of maladaptive behavior.
For the sake of the board's integrity, I cannot support anyone who takes advantage of the good will of respectable members. Given Chip's long pattern of deception, to think that he can change overnight would be a medical miracle. Even with 6 months of therapy, I can tell you from my experience he still has a long way to go.
-John