One of my FIRM thoughts previously here was that he lay where he was pretty much killed. Evidence, behaviors throughout that night and after had me change my thinking. I just wrote that I was surprised that they didn't put him in the street or closer to the road. I wonder if originally they quickly cooked up we'll let it be thought a plow hit him. Jen McC, said she was texting him and SAW KR's SUV STOP at that area. (whatever they planned to say about that) After that 'event' and in the morning with KR, KR as we know, was saying to HER, 'I hit him, (3 times JMc said KR said this). NOT determined for sure if KR said Did I or could I have. The perfect idea sprang to mind for her which she passed on to Albert and the others. Also, JMc SAW the SUV sitting at that spot as well. That could of been why also brought to that spot. Albert just wanted JO out from his house..
I really can't figure out what happened, with the mess they made of this investigation mainly, and I definitely think KR will not be found guilty of murder nor should she be, but I have to say there is a problem with your scenario imo.
If the people in the house in any way brought an unconscious or incapacitated or dead JO outside to leave him on the lawn for whatever reason, there would be evidence of that, wouldn't there be??
Drag marks mostly, I have to assume. I suppose 2 men could have carried him out without JO touching the ground, but that would have been a struggle with JO weighing 220, plus snow had already been falling for some time, so if not drag marks, there would have to be obvious footprints. Obvious in the way that an investigation would have shown prints of 2 men, and I think a REAL investigation could even surmise that they were carrying a heavy load by scrutinizing the tracks. Even if they just kicked him out of the house by shoving him out a door, JO's stumbling footprints would still be seen.
So I think that he died pretty much where they found him, or they could have seen anything otherwise.
I can't remember exactly all the times everybody said they came and left, and a lot of them were approximate anyway, so it's hard to say, but I think it's possible that JO was hit by a vehicle, but not necessarily KR's. She wasn't the only one coming and/or going during this time span.
And it seems a more likely vehicle to hit him, considering the weird injuries he had, would be the one with the (sharper-edged?) plow attached, BH's Jeep. He came or left around the time JO got there, especially if JO, in his drunkenness, for whatever reason, stumbled around outside for a bit before going inside.
There was vomit on him, so maybe he got out of KR's vehicle and didn't go right in because he had to throw up first, which he would have done outside, of course. They should have seen evidence of that near the curb probably, but I don't think their investigation was even that thorough. But his injuries would be different if he was hit by a car while standing, which is hard to believe, because why would he just be standing there as a car came at him, as opposed to if he was hit by a vehicle while double over throwing up at the side of the road on the lawn, which is where he was dropped off. Which would also make it hard for KR to see him after he got out, if he was leaning over throwing up, out of her view.