you sound like lance armstrong.
if he was running a dirty program or was dirty himself, why would he tell you the truth?
floyd landis kept doping a secret from his family. you obviously aren't family so you have no idea of what really goes on. i don't know the answer either and there is no way to prove what really goes on, it is all he said she said and you believe those you trust most.
3 decades doesn't mean you know someone. you never really know anyone in life. there are countless examples of people going completely insane and everyone who "knew" them couldn't believe their actions. look at suzy favor, who could have predicted that? plenty of people say they weren't surprised but no one saw her going that direction.