In 2006 her A sample was positive for EPO, but looks like B sample was not:
http://news.bbc.co.uk/sport2/hi/athletics/7184067.stm
https://en.wikipedia.org/wiki/Marion_Jones
https://www.theguardian.com/sport/2006/aug/19/athletics.drugsinsport
The best part of her biography is this:
"Even back at her California high school in 1992, the 16-year-old Jones missed an out-of-competition drugs test but escaped punishment at a hearing.
Her mother had seen to that by hiring Johnnie Cochrane, who successfully defended OJ Simpson on a murder charge."
Dirty cheater from teenager age, as many of them...
Now regarding Icarus, how many variables exist in 7 day road race - 7 days more difficult than any 7 days of any grand tour?
How many variables exist in running circles of 400m?
He increased his output enormously from 250 to 349W - he should performed better, but maybe he had weakmind?
He should tested himself in 1 hour time trial on velodrome and he would prove whatever he wants to prove, in 7 days many thing can and will go wrong.
Maybe just to mention that on stage 4 of the race his derailleur was gone on climbing up to 6781ft Col de Fer and he had to ride 100km in longest gear, what about that? He lost his 11th place and dropped to 24th because of that - variable.
After that for sure you get weakmind disease and you are finished.