Actually, that interview was likely one of Clinton's more honest moments in that he showed his anti-American self.
I don't think he is being treated for a psychiatric illness. I do think he is a sociopath and I think his whole interview with Chris was a show.
The real tip-off for me was that a few completely unverifiable stories were planted in the media at the time, describing meetings he was holding with members of his former administration in his Harlem office. There were no photos or video clips of anyone getting in or out of a car in New York for those meetings, and no direct quotes from reporters covering the events. There were just a bunch of quotes from former Clinton administration hacks describing meetings that may or may not have taken place.
In January of 2002 I put this chain of events together and surmised that these stories were planted in the media simply to make is seem as if Clinton were still involved in his normal day-to-day affairs.