Read his 9:23 post (which used to say, in part: "It is definitely not speed related, but it is definitely speed related.") and my 9:45 post. That was the "fix". (Far as I know, the car still needs work.)
Well, I kinda did automatically because it didn't seem related to torque. If it were an engine mount, I'd think that torque would cause the engine to rotate (equal and opposite to crank rotation) regardless of rpm. The rotation of the engine would cause some kind of vibration-type feeling.