Cannot vindicate Mitchell entirely on the basis of this latest information, although the allegations surrounding the supporting email that seems to have come from a serving police officer, and the lack of any corroboration of passersby from the CCTV do devalue the official log somewhat.
It should be remembered, before we all rush to conclude that Mitchell was,after all,stitched up, that the official police log is an account verified by both of the 2 officers on duty at the time - So if Mitchell did not say "pleb" then both these police officers conspired and lied - something I still find difficult to believe, primarily because of the use of that specific word,pleb.