So now they can challenge the jurisdiction of the CAS over this matter - after having appealed to it themselves, and thus implicity accepted its jurisdiction? That's pretty rich, even for Belgian lawyers.
Sorry my friend, you don't fully understand the system. Specifically, an athlete governed by any
sporting body that's a signatory to the WADA Convention must
appeal to CAS (a figleaf "arbitration" body that WADA uses for a veneer of objectivity) first, and only after that can appeal a judgment to the Suisse courts.
You need to understand how WADA's reign of terror came 2B. In 2001 the late Franco enforcer Juan Antonio Samaranch retired as head of the IOC, and Jacques Rogge (BEL) beat Dick Pound (CAN) to succeed him. So Dick got control of WADA (then about 2 years old and quite weak) and turned it into one of the most Draconian bodies in sports history.
The Whereabouts Rule is a prime example. Nina was on tour, where they could find her most of the time just by checking drawsheets.
If one is doping, the evidence doesn't leave their system that quickly, which is why in 2005 "someone I shall not name"
had a positive B sample for Nandrolone taken around 10 days after the A sample, thus the "little bit pregnant"
I could write a book about WADA's deficiencies, but I'll wrap up here by saying that their "big brother" (the IOC) allows NBA basketball players to compete in the Olympics, despite the NBA never having been WADA compliant. Early in 2011 for example, OJ Mayo of the Memphis Grizzlies was suspended 10 games (during the 82 game regular season) for a PED violation, and also
was eligible for the playoffs.