I haven't trusted Jones for a very long time,.....
I don't trust him either, so when I do occasionally listen to him, I take it all in with a grain of salt. I'm still waiting to die from the swine flu that was supposed to wipe us out 2 Summers ago.
AJ's behavior at that event is certainly suspect and if you watch his eyes at 1:20, IMO he knows what he's doing is wrong.
As for his motives you can only speculate, but IIRC years ago AJ used to encourage people to set up micro broadcasting stations. So why is he disrupting that demonstration?
People need to know how to deal with asshats like Jones when he behaves like this. Someone should have gotten up close to him and stepped down hard on his foot all the while laughing at him. That should set the screwball off, at which point you can then take necessary action to defend yourself.