From CNN ...

Randy Scheunemann, a senior foreign policy adviser to John McCain, was fired from the Arizona senator's campaign last week for what one aide called "trashing" the campaign staff, three senior McCain advisers tell CNN.

One of the aides tells CNN that campaign manager Rick Davis fired Scheunemann after determining that he had been in direct contact with journalists spreading "disinformation" about campaign aides, including Nicolle Wallace and other officials.

"He was positioning himself with Palin at the expense of John McCain's campaign message," said one of the aides.