The rule says the shooter must not break the 180 correct? Thats not the issue.
The issue is that camera dude is unsafely close to that 180 at a location near a target. Camera dude is not subject to the rules. The shooter, RO, and range are however, subject to legal liability which trumps any rule, and RO is under no requirement that keeps him from just stopping until they go away. RO is not being paid. If you require the RO to expose themselves to increased liability there is no reason for the RO to continue.
Also, why are you making this an issue? Camera guy is in an unsafe position. Shooter could be Grandmaster Gundog but he could still slip. Camera man could easily reposition slightly or even better welcome themselves to the 21st century and install a nice remote camera to get even better shots.