The story of Hoover having stolen a Fw190 has some doubts surrounding it. There is no report of a Fw190 ending up anywhere in The Netherlands around that time (April 1945) that fits the facts of Bob's story. He has two versions of his account:
1. He escapes along with others and steals a Fw190 at a nearby airfield.
2. The guards have left and they are free to wander around the surroundings of Stalag Luft I, find an abandoned Fw190 (in good working order and fuelled!) and he flies off in that, not wanting to wait for the allies to reach the area.
His story mentions Dutch farmers approaching him with pitchforks, windmills in the area, the coast of the Zuiderzee and being turned over to the British. It could be true, but there is little substantiation for his account. His own comment, shortly after the war, was: "I have told the story so many times... it must be true."
The version from his autobiography is here:
https://books.google.nl/books?id=-YzdBwAAQBAJ&pg=PT303 (may not show the correct page... blame Google)
There is also a video interview here in which the story features:
(from 30:17).