Call me a nut, but in a case like this I don't even look upon "the media" and "the government" as two distinct entities. So granting one of them "access" to the workings of the other is sort of like having the FBI provide illuminating commentary on the incompetence of the CIA in the weeks and months leading up to 9/11.
I am a little confused with your concern about this. I believe that The Wizard was simply using the movement of the media as a sign war is coming. He did NOT say that the government was cluing them in. Rather, they are in the information business, and probably have sources and observations that have led them to draw that conclusion, as Wizard has done by watching them.
In time of war, information is often unreliable (as we learned by getting all steamed up about that Marine amphibious invasion in Desert Storm, which never happened). It may be that the media is also being led on a wild goose chase.
However, I expect the administration to do whatever it takes to win this war, including denying or granting access to the media. President Bush's primary responsibility is the defense of the nation; if you look at things from that perspective you won't be alarmed.