CFZ interview MK Davis who says he has an additional film and additional stills from the original Bluff Creek film. Allegedly, they were there hunting Bigfoot with a dog, and had already killed one. There's supposedly a bloody pool (there's some sort of pool and there seems to be something black in it - doesn't look very red to me) which had the remains, including pelt of a previously killed animal, which they were using to train the dog to recognise the smell. Intriging, not sure that I'm convinced.
Part two yet to be uploaded/aired.