Sorrow and Anger

What happened to Tyler Hamilton? I had heard about the doping scandal but just caught up with the news that his appeal was denied. He failed two separate times, the Olympics and the Tour of Spain… The Oly time did not count because the “B” sample was not handled properly. Still two test on two different times were positive. I read about the chance of false positives and it seems that there are very few ways for the test (which has been used in the medical community for years) to be a false positive and Tyler can not offer any of those explanations. I would have never thought Tyler would do something like this. Based on what I read (and I could have missed something) I would have found him gulity. Does anyone know anything different? Does anyone else think he should give the medal back?