moviefreakedmind said:
https://www.youtube.com/watch?v=vWeDd7lfNsM
Here's the direct source. He doesn't mention hearing it from Lucas but there appears to be an edit in the footage so I don't know. Then again, Empire representatives were there so they'd have to be flat out lying if he didn't later say that he heard it from George Lucas
He clearly swore. They mention a 7 second delay. So they cut it.