You're arguments are flawed and without sources again.
Bamber shot Sheila around 2pm. Which is 2 - 6 hours before the police entered WHF. So rigor mortis had set in.
People fall asleep on trains, in cars on chairs, but I have yet to see someone fall sideways. Even when in cars, trains and planes which are moving vehicles.
What has Sheila being small got to do with anything ?
If you don't believe Bamber pulled Sheila's legs at least two feet, please say why the police would do this in the short period before the crime scene photographer arrived.
Adam seems you don't read posts properly, I did not say rigor mortis had not set in just reminding you how long it takes and that someone of Sheila's build may never have been totally stiff during rigor mortis because I would guess she had a poor muscle base due to her genetics and her diet. She was incredibly light at 7st .... being almost 5'8"
Of course people fall sideways when they are sleeping. if they are sitting absolutely bolt upright, with their back well supported and are perfectly balanced they may not but it's far more common to slip sideways. What about the old joke of someone waking up on a train with their head on their neighbour's shoulder? I was simply saying you cannot prove anything by your argument that people never slip sideways because we know that they often do.
The fact is that babies and children who tend to have a small muscle base do not show the same symptoms of rigor mortis as well muscled adults because in rigor mortis it is the muscles which tighten and cause the body to stiffen.
I simply suggested that Sheila was very light and slight and was a recovering anorexic I believe, therefore she also may have had a poor muscle base which would mean her body may not have ever completely stiffened up with rigor mortis. If you used your reasoning from this fact you may have come to the conclusion that this may explain why the police were able to move Sheila's wrist/arm many hours after some believe she died and that rigor mortis would have kicked in.
I do not know whether JB or the police pulled Sheila's legs or what the reason would be for the police do that, therefore I am afraid I can't help you there.