Was the person filming official? By which I mean had the permission of the TD to be there filming the round?
If it was just some random person filming the round on his own, then JohnE may have been within his rights to ask not to be filmed. If it was someone with permission, essentially official media covering the tourney, then McCray is obligated to allow himself to be filmed.
Right from the Competition Manual:
3.06 A. All participants agree that the PDGA and its agents may publish photographs and images of their participation at PDGA-sanctioned events.
If he's playing a PDGA event and the TD (a representative of the PDGA) has contracted or given permission to a photographer/videographer, a player can't object to being photographed or filmed.