The cast finally went yesterday! Foot looked very withered, battered and bruised but was OK. Lots of dried, hardened dead skin. Nice. The x-ray showed seven screws holding things in place. The doctor said everything is healing up fine and told me to try to walk on it: I managed half a pathetic step!
Today has been much better though. I've spent the day doing stretches and taking delicate, clumsy steps on it. Gently easing back into this whole walking deal, but doing it with persistence.
I've been told that the physio department will call me to set up some appointments, so I'm waiting on that.
Thanks for thinking about me! It has been a surreal seven weeks.
EDIT: I'm going to start going to the pool very soon on your advice, JimBob, so I'll let you know how it goes.