I watched your elephant walk drill and I'm still conflicted.
Does the peak of the backswing end as the plant foot toes touch the ground or as your heel touches the ground?
Watching slo-mos, sometimes there's just a fraction of differentiation between throws that make it tough to understand. Danny Lindahl says that the apex of the backswing is as the plant foot touches the ground, but I feel there is a lot of power to be lost or gained in that split second of time between the toes touching the ground and the plant heel actually grounding the throw.
So the question remains, do you swivel the butt back as you're shifting weight into the throw more like squashing a bug, or do you ground your heel, let the momentum carry your bodyweight to the right (RHBH) then pivot?