Tony said "if he left on foot we would absolutely have seen him, however it is forensically not impossible that he did not leave on foot"
I added the words "between the hours of 0300 and 0800" to highlight that CCTV had only been studied between those hours.
What I missed - and you rightly pointed out - is that Tony said "It's forensically NOT impossible that he did not leave on foot".
Tony is right - unless forensics studied the pavements and roads of course they couldn't FORENSICALLY determine whether Corrie had left on foot. And it's all too late now...his footprints and any evidence of DNA would long be gone now...unless there was blood, perhaps.
Whichmmeans the only hope left of determining Corrie leaving on foot would be by camera - and as it appears they've only been viewed up until 08:00 Saturday morning, who's to know he didn't leave later?