He doesn't have to. It seems to be falling apart by itself.
Stu White, quoted in many of these items, was not even aware of this incident until the Washington Post told him about it. The Post lied about this at first, then changed the story to "fix" it. Eventually, they were forced to acknowledge the change.
Note the thing at the bottom of the ABC article:
"This post has been updated numerous times to add context and quotes."
Heh.