What a shame there doesn't appear to be anyone here with the expertise to explain this.
Since I made that post, I've also been wondering some more about the position JonBenet was left in, apparently wrapped in the blanket.
I was surprised that the one autopsy picture I've seen of JonBenet's back, shows livor mortis (redness) and not much blanching. It could be of course that there are areas of blanching beyond the perimeters of the photo, like shoulder blades and buttocks for example. But what surprises me even more is the way John carried her body up from the basement.
He was carrying her higher than his own head as he went up the stairs, with his hands either side of her waist, so that her front was facing away from him. Det Arndt saw JonBenet's front as John advanced towards her.
This means that if JonBenet was lying on her back in the basement, John would have had to pick her up and then turn her completely around so she faced away from him before he took her up. Why would he do that? A more natural way of holding your daughter surely would be to cradle her to your body. So I started to think of why he would make that manoeuvre and deliberately turn her around to carry her out of the wine cellar. It seems cumbersome.
And yet another question arises. If JonBenet was wrapped like a cocoon with the blanket folded around her, as John describes, her arms would be folded into the blanket and held by the blanket, not left free outside the blanket and up above her head. I'm beginning to think that John misled everyone with his description of the way he found her. We only have his word to go on, but the body tells a different story, IMO.
The most logical reason I can think of, for John carrying JonBenet like that, is that JonBenet wasn't lying on her back and he didn't twist her 180 degrees away from him just to carry her (try and imagine that movement from picking up a supine child), she was lying on her front. Lying on her front with her right cheek to the ground facing the direction of her left shoulder (livor mortis on right side of face, tip of her ear blanched) and her arms up either side of her head. I think it more likely the blanket had just been draped over her, not folded around her.
This would mean that when she was laid on the rug upstairs her face would be exactly as the photo depicts. If she had been lying on her back with her face lolled over towards her right shoulder that side view photo of her would show her face pointing towards the camera, as I said in my earlier post above.
I can also think of a reason for the long cord around her wrist. I think she was already in rigor mortis when it was added to the scene, and her arms were already locked that distance apart by rigor. John's description of her hands being tied tightly together was always rubbish because her arms would have still been in that position when she was brought upstairs.
I'm convinced he hasn't given a true account of how JonBenet was left lying in the wine cellar.