He wasn't a leaker, He was a whistleblower.
Felt said he was upset by the slow pace of the FBI investigation into the Watergate break-in and believed the press could apply some much-needed pressure on the administration to cooperate.
Or a senile old coot who Woodward has duped into believing that he was "Deep-throat". I still believe that there was no deep throat.
Look at the DOJ now. Whitewaters, um, whitewashes everything: illegal aliens, theft from the National Archives, missing FBI files, ...
Coincidence? I think not.
Thank you, Mark Felt.