Whether or he has certain sexual preferences or he likes to experiment with chemicals, is pretty much immaterial...at this moment in time. It may be relevant further down the line, or not.
Clearly it is key to establish whether he departed Bury in a car or not....and if so, if he went willingly or unwillingly.
Given what is known (or rather assumed from what is not seen on cctv in the rest of the town), is that he departed Bury in a car.
But "from where" did he depart from.
Did he walk back to the corner of St John's Street and Brentgrovel Street and get into a car there ?
Or did he depart from the top of Short Brackland ?
Here the phone comes into play....and the bin lorry. Knowing precisely where Corrie departed from, you can possibly work out how he departed (willingly or unwillingly).
If for example, he walked back the way he came and got into a car on that corner, then the likelihood is, Corrie went for a pee, he willingly got into a car, he departed Bury and he was in the Barton area at 0420 and he was with his phone.
Establishing "the above" would be a "game changer". Unfortunately establishing just that relies on the analysis of CCTV and modelling of cameras 09 and 34. And it is precisely this... that there seems to be great "confusion" about. I really don't know if this is been done on purpose. It is a "live investigation" afterall.