I am convinced due the witness accounts that the forced landing/emergency landing happened - I would not call it a crash - a crash with the pilot still in his seat will (normaly) cause more that an easily fixed broken nose! And I also believe that the pilot was Norwegian - why should the police not tell the truth?
This incident could easily have been very trivial, and therefore not recorded.
In one of the posts it was mentioned that the wheels went down in a ditch and the aircraft therefore overturned. If this happened at low speed the damage may have been very limited not making a report necessary - after all there was a war going on with a large number of incidents/accidents.
I think that the ground crew just removed the wings in order to get enough space on the truck and on the roads- bearing in mind that the wingspan of a Spitfire is around 36 ft.
If the above is correct, i.e. a Norwegian force landed the aircraft - then how about mr. Raasch's story?