Off topic here slightly - please forgive..
There are so many ways to look at an event or an action.
For instance, while it might damage Roger's reputation with some, I actually think that the overdue camera is a vote for the authenticity of the film and a definite strike against the idea of a hoax.
You can't pull off a hoax as intricate as this would have had to be, and be dumb at the same time. He's carried out insane level research into hominid physiology, foot morphology, primatology and bio-mechanics beyond the reach of science at that time. He's mastered better-than-cutting-edge costume, prosthetic and make up techniques on little budget. He's pulled all the logistics together for this one shoot. No way on earth is he allowing it to be filmed with a camera that was so overdue.
If you're planning a hoax for October, you don't hire the camera from May to July (or whenever it was due back). You hire it just for the time you need it, and take it back early. You want to be as invisible as possible. You definitely don't let an arrest warrant be issued for you 3 days before filming your hoax.