"He'd already have the inertia to complete the jump"
Not if his forks had a failure on the up slope, or the chain broke and caught in the spokes, or an engine failure causing a compression lock, or a handle bar failure, or...... The list is extensive. I certainly would not have had that cameraman anywhere near where debris could have hit him had something gone wrong.
I wonder how far a piece of main or tail rotor could fly if the helicopter had drifted the couple of metres backwards into the landing ramp?
Don't get me wrong, it was an impressive stunt, however I would love to see the risk assessment.
Dangly.