I'm swithering.
I have no real idea how long this thing will take to properly heal, and sitting on the back of a tandem doing road miles is not the same as throwing an MTB between the trees.
I think you should count me out just now.
If it turns out it's bionic you've got (if I read the rulz correctly) until 10th September to add me, or can pay an extra £5 to change between then and 22nd September.