I agree Roch. It is absolutely beyond doubt that some police officers involved felt very uncomfortable. The crime scene was certainly re-staged, for whatever reason.
Here is a relevant question I have asked before and didn't receive an answer, so it may not be known, but let me re-try:
Does anybody here know if the bed in the master bedroom was hard or springy?
What brand/make of bed was it?
What was the mattress made of?
Was it wooden or metal framed?
How high was it off the floor?
The hard/springy question is particularly important, I think, to the question of police staging the scene.
I think the police did stage Sheila's body in the master bedroom, but for innocent reasons. To be precise, they
re-staged it. One possibility is that, rightly or wrongly, the raid group officers found Sheila on the bed and they believed she was still breathing and/or conscious and went to her assistance. This caused the body to be moved on to the floor. (It may also have resulted in an accidental discharge of the rifle).
It sounds far-fetched, but in reality it's not because you would only need maybe two or three officers to know and they could, for one reason or another, keep it to themselves. Possibly the initial reason may have been a mistake or misunderstanding in which the information 'slipped through the cracks' because they simply weren't asked. It was just assumed by the detectives that the bodies were positioned as found.