Now I'm feeling much better, healing fast. thanks for all good wishes.
As for the bike. Air pressure 2.4 front, 2.5 back. Suspension checked front and back, OK. Steering damper 3 clicks. All wheel bearings OK. Engine: flushed out sand from one cover and drain back, apart from sand, engine oil clean. Replaced sparkplug, runs perfect. Gearbox OK.
The only thing we have found that's not OK, is the eyebolt for the steering damper.
The blot has broken off, right at the base of the thread. There is evidence of fatigue, one third of the break being greyish matt in colour, the rest silvery and knobbly(?).
The best take on the situation is that the steering damper has come off at the begining of the bumpy road, and that the steeing became unstable.
The reason for the fatigue, could possibly be the adjustment of the damper clamp. Which might have made it possible to lock on the steering damper instead of the steering lock tabs on the clamp. This is not yet clear, as my bike has got broken tabs, it will have to be checked on a new bike.
This could explain the scenario seen, and there is no damage to the steering damper, it has certainly not made the violent swings the steering has done, as there are no marks either end, only a scratch where the damper has fallen on the oil cooler.
My advice to anyone with this steering set-up. is to check the eyebolt, right where the tread starts, before the contra nut, on the lower clamp. Also check that the steering is stopped by the stops, not the clamp. This is only applicable on parking, of course, but it could bend the bolt, only for it to snap later.
As for my fits and old age but thanks for the good wishes