A four star general who was forced to resign following unflattering remarks he and his staff allegedly said about President Barack Obama and Vice President Joe Biden has been cleared of all wrongdoing by the Defense Department inspector general.

In the report (.pdf), the Pentagon claimed that they were unable to substantiate any of the inappropriate remarks Gen. Stanley McChrystal and his staff had made to Rolling Stone reporter Michael Hastings.

Hasting's June article, "The Runaway General," had quoted McChrystal as referring to Biden as "bite me," and making a "middle finger" gesture towards the president.

"We found that, while it is possible that the incident occurred as described in the article, none of the witnesses who recalled the pre-diner conversation recalled seeing GEN McChrystal make the gesture," the inspector general said.

"Multiple witnesses testified that GEN McChrystal and his Staff sought to avoid making any comments that could be construed as divergent from Administration policies," the report said of the Biden slur.

"Witness testimony led us to conclude that someone in the room made a rejoinder about Vice President Biden to GEN McChrystal's comment, and that the rejoinder may have included the words 'bite me.' ... Several other witnesses testified they did not hear the comment. We were unable to establish the exact words used or the speaker."

The inspector general also examined eight other incidents and determined that none could be substantiated.

Last week, the White House announced that it had asked McChrystal to head a new advisory board to support military families.