Key question - will the bootee come off to day or not? Foot certainly settled down, however am cautious for now.
Answer: Yes. Physio now and reintroduction to running on "zero-gravity" treadmill with gradual build of g forces.
Debated whether to head to the MTBO, however too complicated with drive, dog care, no map holder etc. so instead went to explore the ElmCreek MTB trails. Gorgeous day, mod temps and fantastic single track (hadn't done any of such for at least 10 years). Stayed in control especially on some of the gnarlier sections, skipped a couple of the real technical log rides, but otherwise no spills and a big grin. Will do again!