Conservative activist, author, and political consultant Craig Shirley, contrary to Politico.com's reporting, was not "ousted" from his job advising the McCain campaign. In fact, he's not been on retainer since March. That according to Townhall.com's Matt Lewis today:

Politico's Ben Smith reports,

John McCain's campaign asked a prominent Republican consultant, Craig Shirley, to leave his official campaign role Thursday after a Politico inquiry about Shirley's dual role consulting for the campaign and for an independent "527" group opposing the Democratic presidential candidates.

I'm told by a reliable source that Shirley was not asked to leave. Instead, he was given the choice and decided to stay with the 527.

In an update, Lewis noted that he talked to Shirley, and far from being ousted, his services haven't been employed recently:

Update: I just spoke to Shirley and according to him: