Was it target fixation? To me it looked like when he saw the car he would have hit it if he had continued his turn just as tight and fallen off if he'd made it tighter. Maybe he made the best of putting himself in a stupid situation.
It looks like quite a smart decision, i reckon he could have leaned over a bit more and made it (just), but I imagine seeing an unexpected car put him off a bit, he then came up to break realised how close he was to the car then decided to stick it in the hedgerow.
Using the whole road is always a nice feeling but you can really only do it if you can see it's clear otherwise you just have to assume you'll be restricted to your lane. And then you've got to assume there is a sheep in the middle of your lane too.