The wounds on my left foot are almost entirely healed. The credit for this goes to that pain-in-the-ass (and occasionally, subsequent to tangling with stairs and other obstacles at least once a week, pain-in-the-neck, -head, -shoulder and -back) cast, which has completely off-loaded the pressure on the foot. It seems I'll get the damned thing off just in time to go marching through Mordor again. (We still have no firm date on the next hearing, but best guess is currently mid-September.)
It will be up to me not to re-injure it. At least with a diabetic shoe on the foot I can get back on the exercise bike. Although, I could probably make money selling DVDs of my one experience trying to do it in this cast. It would be hilarious to anyone other than me.