He did. Armstrong had the opportunity to take the case to arbitration but he declined.
Ask yourself WHY??? It's not for lack of money which he has plenty of -- a little less now.
He has said why many times - he is just sick of the circus, and just wants it to end.
Silence does not mean guilt.
did you see the criteria for the joke of a hearing?
NO right to see evidence.
No right to examine the accusers before trial
No right to examine or challenge the methods of obtaining the evidence.
That was no a tria or a hearing, it was just a reading of the verdict with a chance to read a meaningless response post sentence.
Even a 100% guilty murderer had more of an opportunity for trial.