I kinda figured that paper was PG's..."a powerful gift" seems more along the lines of his manifesto, etc. and we know he went to Berkley, so it could be related to that, maybe even a script or notes. We don't know who printed or wrote or otherwise obtained that paper. It could have been Jaycee, but it also could have been PG.
Actually it was a pile of printed sheets, it looked like multiple copies of the same thing, perhaps for handouts when he staged his event.