hehehe Good for him. Although I would imagine they won't be giving him a pension.
I have seen papered "mechanics" who can't mechanic, people who pass bar exams and can't figure out law, doctors who wouldn't know a duodenum from a tibia, etc. One of the better mechanics I know now doesn't have papers. IMO, if someone can do their job why the hell do they need papers saying they can? Anyway, I would have kept the guy and just made sure he wouldn't drive anymore. After all, he's obviously shown he's reliable.