So I did a few sessions on the Derbi 2-stroke just to get some time in on the bike, then I packed up. But before heading home I borrowed a friend's 200cc bike for a few laps. And crashed it in turn 1 on the second lap. I don't know how, but I hit hard parts leaning in to the corner and it lifted the front end.
The bike landed on my foot, so I'm limping around today too.