I've just seen a few 2-3 minute clips from the interview, and it's fascinating stuff. While I think the boundaries of the interview were clearly defined before the event, I'm in no doubt that the responses are - at least for the most part - genuine. I suspect that the Betsy Andreu stuff is too personal to be easily given up, and the 'comeback' may be what he's hanging on to to try and show that he really was a quality athlete - no, honest!
What does come through loud and clear is that he was and is arrogant and controlling and, although he seems to accept that and his wrongdoing on an intellectual level, he's still having difficulty believing emotionally that he really was wrong. 'I did it because that's what I had to do to win' is self-justification, not catharsis. But it's powerful stuff, nonetheless. I wonder where it will lead?