Well, if and I say IF Menchov is on something, then I can't delude myself and say that di Luca is clean.
I don't know, I am split on this issue.
Given Kohl's admissions, it is difficult to believe the 'myth' that only a few bad apples taint the peloton. If he came in third in the TdF, fully prepared, then how come others, including Menchov (Banesto, Rabobank) as 4th, Evans (Silence Lotto) 2nd and Sastre (Banesto, CSC) 1st could have performed so well.
On the other hand, perhaps Kohl was really not so talented, and he needed the extra boost just to shoot him up to the ranks of the superstars. Fast track to fame and glory, and given the fact that he had passed doping tests for over 5 years, why would he believe anything would change.
On top of that, if anyone has read the depositions of Triathlete Lisa Hütthaler, also served by Matschiner, you'd see how these dopers lead a double life. They lie to everyone, even their family and closest friends, and live a life in the shadows, being paranoid about people seeing them in the wrong places, forgetting whom they told what about there whereabouts and activitities. Since they lie to everybody they hold dear, they sure need a good justification. Cognitive dissonance would explain that they actually start to believe the 'myth' that everyone dopes. If not, who are they kidding!
The whole Rabobank debacle in the 2007 TdF would be very interesting to dissect. Menchov not on form, Rasmussen being in amazing condition, taking over the leadership role/protected role of Menchov, who subsequently drops out the day after Rasmussen got fired (who is implicated in the purchase of a centrifuge). Perhaps Menchov (always) rode clean, and noticed that some of his team mates were messing with the wrong products, that he could not accept. What explains his lack of form in that TdF, or him, as the only one of the whole team, leaving?
Boogerd, at his age then, rode a great 'last TdF' assisting Rasmussen to hold on to yellow. Thomas Dekker was another great superdomestique, whose irregular blood values story and his ties with Checcini, have not done his rep any good. I know that Boogerd was devastated after they pulled Rasmussen from the team, which made them lose the yellow jersey they had worked for so long. He defended Rasmussen till the end. Then again, Boogerd was known for being an training freak, who'd never pass up and always made every team training as tough as nails. Perhaps, in his last TdF, he gave it all he got, with the yellow in sight, he rose to the occasion.
I have always sensed some, perhaps unfounded or ill-perceived, animosity between some rabobank riders (amongst them Boogerd) and Menchov. Criticizing him for 'not delivering', 'not being a team leader' or lacking 'confidence'. Who knows, if you notice that the rest is on something, how could you not be unsure of your own capabilities...
I just don't know, but I sure hope he's clean.