i've not got time to read 40+ pages of stuff but it would appear as follows:

car a span off
car b saw him spin, and sapn off as well
car b then hit car a
car b and car a both went their separate ways
car a's insurance company paid out
then the insurance company took driver b to county court
and won their costs
without the judge actually seeing any footage of said accident
which is typically what county courts do in my experience, make up their minds about shit before they've even spoken to the folks involved
in this case it would appear that driver b wasn't even aware he was being sued and didn't even turn up at the court to put his side of the story across