@Simon
That's why he won't actually point to anything specific that he claims to be untrue - because he doesn't have anything he can point to! He's relying on innuendo and suggestions that there is something. But as Wendy's once advertised, "where's the beef?", way past the time to put up or shut up.
I believe he would also have to prove there was intent to damage. So he would need to prove that we knew it was a lie, then after knowing it was a lie we continued with it...but could be wrong there.