Pretty easy to see what is going on here. Armstrong didn't want to go through the hearing in which 10 or more people were going to testify that they saw him doping.
quote:
The antidoping agency said more than 10 witnesses including some of Armstrongs former teammates and allies had agreed to testify against Armstrong in a public hearing. There, the antidoping agency planned to reveal its evidence against him.
»
www.nytimes.com/2012/08/ ··· nted=allThe guy's public image is what he cares about the most, and hearing those witnesses publicly would harm his image more than just not fighting it to him.