Ok then. RD appeared to be a rather large man. Why would they carry RD up the hill, out of a boat when they could "place" him in the lake too? I agree with the "complete distraction" part of your theory. That was a good point. Aren't you glad I am helping
Are you actually a litigator? Very cool if you are.
Actually, yes.
My theory is not "they". The doc was fit for his age. Adrenalin got him to carry Russell up. He knew how to carry. Maybe he got spooked and had to go with another way with Shirley. Could go several ways at that point.