This was not a Fox witch hunt--they were just reprinting an AP story. There are plenty of legitimate reasons to mock Fox "News," so we don't need to make things up.
Rogge has been on Armstrong's side in the test controversy, so it would be interesting to hear more about why he is suggesting this. My guess is that he thinks WADA and UCI will come to different conclusions and he wants an investigation he can control. But that's just rank speculation, subject to change without notice.