Two things are of interest in addition to the other offerings:
Firstly, We are all led to believe that Corrie left the 'Horseshoe' area in a vehicle as he would have been captured on CCTV camera. I'm still not 100% convinced with that sentiment to be honest but as the guys in the field are the trade specialists, I'll leave it to them to work out.
If he left on foot and walked up SB...look what I discovered! This is NOT near the 'Horseshoe', so would not (presumably) be subject to the amount of forensic searching that came about within the first few precious hours. I'm guessing it's 100 yards from where he disappeared from.
This needs looking into by a local or the police to cancel it from the enquiries!