Alan - sorry to read about your injury. From my experience of such injuries, you still have every chance of making it. You need to rest it as much as possible and don't go flying out of the door the moment it starts to feel better. No amount of training at this late stage will make any real difference anyway. Perhaps you could try a bit of swimming or even try a bit of cycling in a few days time. Just stay positive.
Wendi - thanks for the offer of your stage 4 cards. I would like to use them to help navigate the off road sections. I am aware of this year's changes to the route. Promise to let you have them back afterwards.