I'm not sure if it was truly an off day. He seemed to be spending a lot of time worrying and looking about to see where the camera bike was to be concentrating on what he was doing. He also crossed the yellows a few times, plus had his head over them occasionally on the left hand curves, not a great thing unless you can really see oncoming traffic.
IMHO - Race lines are no good for a road like that.
Glad he's OK though, and it wasn't too bad a crash.
Mick