If DT wasn't Diane Sawyer, and how could it not be a woman since its named after Linda Lovelace, then there is no Deep Throat.
A buddy pointed this interview out to me. He said that when he heard Woodward defending Rather's "fake but accurate" memos, he knew that that was the big tipoff that DT didn't exist.
Geeze, I'm cynical enough already, but even I have a hard time believing Deep Throat is non-existant. If true, I'll feel like a true idiot and will be more afraid than ever of the MSM. Not kidding....