I went to the writing room and I wrote the full ten pages. I came home and typed it up. !!! Good! I managed on half a Mersyndol for the whole day! I walked back up to the shops for Turkish pizzas! For many minutes I forgot entirely that my back was broken!
Bugger - I don't feel nearly bad enough to cry off working for the gas company tomorrow.
Thank you Jonathan, Nike, Perry and Jude for your get-well wishes. They worked.