Very interesting. But it sounds a bit strange to me.

I believe in this case, first one would reduce his capacity by using the rope as a strangulation ligature. This would cause bruising. Then one would make sure he was completely dead by snapping his neck through the motion of the suspended noose.

If I understand the description of the bruises correctly, we see something different. Bruises that were caused by taking the corpse down, not prior strangulation ligature.