He went throught a lot, that is for sure. The cancer, the drugs, the hardship of win the Tour (with or without drugs it is the big world race).
It is possible, Ready2. Testicular cancer could had caused severe testosterone alterations. Add to it the drugs he had taken and we have a perfect storm, don't we? I wouldn't doubt if the drugs he took would made in horny and cheating. Tiger Woods and other high profile sports men have cheated. High doses of adrenaline makes you competitive but also horny and, I think, a bit delusional.
I have a collection of articles from musicians, actors, writers, sport people, etc, who all had been through crisis. Being it drugs or drink related, MLC, depressions, or others. Every single one of those people, once they manage to overcome whatever was trapping them on the darkness all say they want to come clean and reach out to all the people they have wronged.
From some reason I keep coming across those articles since a couple of years ago.
Sometimes good things fall apart so better things can fall together. (Marilyn Monroe)