He may have decided to take his chances. Or he may have initially thought that the story was going to be that she was abducted and dumped by her abductor (far away from home!). Or he just didn't think further than "I want the body found .... $$$$". I guess, unless he gives a detailed confession, we will never really know the whole truth.
Re the dense vegetation. He is a scout, he is probably used to walking through bushes and in the state of mind that he must have been then, he probably didn't care about a few scratches? It is all very intriguing and I hope the committal gives us more clues.
He is an heir of the founder of scouting, and I have seen him in a scouting uniform, but do we know whether he was anything in the scouting world other than a public figure head?
My experience with scouting was crappy cuborees and singalongs and absolutely no bush work whatsoever, so I'm not sure how much credence we can place on his scouting prowess. (I was a leader)
Sorry if this sounds judgpmental, but other than a photo I have seen of him in the scouting uniform, I have never read anything about him leading packs of scouts on hikes or anything, and from what we do know of him I cant imagine him doing much in the way of nature walks. ??? Seems too interested in other exrtra-curricula stuff to me. ???
I only mention this cos its come up a few times, that him being a scout would mean..... but not necessarily right in my opinion. sorry
Could be wrong.
sorry I'll just add that regarding the dense vegetation, I was referring to your idea that she was rolled down the bank. I cant see this woudl be achievable.??