To me, the worst thing I heard about Lance was how he treated JT Neal.
Short synopsis:
JT was described by Lance's mom as a "surrogate mother" to Lance. He supported him financially, gave him a place to stay and took him to many of his early races. Lance was essentially part of the Neal's family.
Both JT and Lance got cancer around the same time. Both recovered, but in JT's case it was temporary.
A few years later, JT's cancer came back and he needed to fly in to Austin for a week long bone marrow procedure. Lance agreed to pick him up at the airport and drive him around for the week.
JT's flight comes in, and Lance is nowhere to be seen. He'd stood up the man who had supported him for years, and a fellow cancer victim, because he got last minute tickets to a Wallflowers concert.
In addition, to The Secret Race, people should check out Cycle of Lies: The Fall of Lance Armstrong and Wheelmen: Lance Armstrong, the Tour de France, and the Greatest Sports Conspiracy Ever. Both go into greater detail about Lance the person, and the business behind him.