Dormer has a theory, when questions are posed to him he tends to say things that support that theory. His explanations don't always make a lot of sense and sometimes lead to a whole different set of questions. I don't always agree with his explanations but I do happen to agree with his theory.
The way she got to the place where she was found can be only one of two ways, aliens are not an option. Either she made her way there on her own that morning or someone placed her there.
The notion that her supposed killer would have placed her in that exact spot makes no sense to me for two reasons.
First, if he lived in that community or was in any way associated with it (which he would've had to have been at that time of day) the body would have been miles away so that if found the scrutiny of the people there would be lessened, This of course assuming he was trying to avoid being caught. Load her in a vehicle, pull out of the gate and travel less than half a mile from the community?
Second, She was known to be missing from there and at some point would have been searched for. If he went to the trouble of carrying or dragging her through the bramble either from the road or across the marsh, why not bring along a shovel or hacksaw to further try to conceal?
MP has never been an option either because by the time it would've took him to gather her up kill her and drag her to where she lay it would have been well beyond first light and around the time the popo showed up for the 911 call. Besides, can you picture this guy ever getting his hands dirty much less wanting to break a sweat?
Overhead photos of the marsh through the years shows different terrain, its obviously not all wall to wall brambles. there's high and low points with water filled trenches throughout. I think it would be hell to navigate in places but certainly not impossible for a person with two good legs IYCMD.
A quote from Shannan's sister in the A&E special caught my ear, she said,
"she would look into the mirror and she would cry"
This quote came after mentioning the abuse she took from the sorry



BF, but from the way it sounded I'm almost positive it wasn't in that context but in general terms of how Shannan was. She was obviously a troubled soul, perhaps from past abuses, her medical condition or a combination of things and was troubled more than we will ever know. I can't prove it but I feel this greatly contributed to her death, ironically from her actions and not from the still unknown killer of the four, possibly 10 or more others. Remember them?
Having said that I sit here with an open mind and with blinders/off should further evidence come to light.