Not much commentary here because the below statement from Phonak says it all.
The Phonak Cycling Team issued the following statement Thursday, confirming Landis as the rider in question:
The Phonak Cycling Team was notified yesterday by the UCI of an unusual level of Testosteron/Epitestosteron ratio in the test made on Floyd Landis after stage 17 of the Tour de France. The Team Management and the rider were both totally surprised of this physiological result.
The rider will ask in the upcoming days for the counter analysis to prove either that this result is coming from a natural process or that this is resulting from a mistake in the confirmation.
In application of the Pro Tour Ethical Code, the rider will not race anymore until this problem is totally clear.
If the result of the B sample analysis confirms the result of the A sample the rider will be dismissed and will then pass the corresponding endocrinological examinations.
Please understand that we cannot at this time give you more detailed comments.