Ok, Lance choosing not to defend himself is not an admission of guilt. However, it makes it a lot easier for the prosecution to find him guilty because there will be no one in court representing him.
It's really sad to see a great man fall like this. He was an idol for millions, and now it's all left in ruins. Sad, really sad.
I just hope something positive comes out of this. Like a culture of clean riding, and not this "anything to win" attitude.