YOO
Nope, I guess it was a combination of things.
First of all, the treeline was weird, I mean, I try to see the way the road is going to, and mostly the trees beside the road help you predict where it's going. Not this time though, I thought the hairpin was gonna start behind the last tree, a very short hairpin to say, but it started earlier than I guessed.
The road went to the left between the two last trees, before going to the right, something I didn't see untill it was (probably) to late.
Second of all, I was catching up with my mate, at the moment I made the mistake, he was just 20m in front of me, and I was surprised to see him there, so I looked at him instaed of where the road was going to
And even maybe, I was getting a wee bit unfocused
Anyway, I went straight ahaed 'cause I could, if there had been no open space on the right side of the last tree, I just would've pushed the bike down, and took the turn as it should

The reasson why I didn't was because I saw no reason to take the risk of pushing my bike into a curve I only saw at the last moment, I had space to spare, though it being off-road
@ unhinged and PhilM: I take it you didn't like the music, or is it sarcastic?
Not being an Englisch native speaker, I sometimes don't get the clue
Grtz, Philip!