When I read this:
Deep Throat has a book deal and a movie deal, and he could end up being played by Tom Hanks.
... Felt's role as the most famous anonymous source in US history was even more complex and intrigue-loaded than the newly revised public account suggests. According to originally confidential FBI documents--some written by Felt--that were obtained by The Nation from the FBI's archives, Felt played another heretofore unknown part in the Watergate tale: He was, at heated moments during the scandal, in charge of finding the source of Woodward and Bernstein's Watergate scoops. In a twist worthy of le Carré, Deep Throat was assigned the mission of unearthing--and stopping--Deep Throat. This placed Felt, who as the FBI's associate director oversaw the bureau's Watergate probe, in an unusual position. He was essentially in charge of investigating himself.
When you realize that Mark Felt, the No. 2 man in the FBI, threatened the good name and liberty of others to throw the scent off of himself, well, is saying that it was all ok because he was "on the right side of history" anything more than a real life instance of claiming the ends justify the means?