It happened to another german guy recently in europe, last year.. he was flying on contract for iberworld based in germany and he pretended they were provinding an upgrade to the left hand seat.. then one day, on his own he presented himself on duty with a four stripes uniform informing the captain he was allowed by the company to start his training, the captain who was an istructor seated on the right seat trusting the copilot's words.(incredible!)
After a while the story came out and he was fired.
Then Sigmar aviation called one of the captains working for the same contract asking credentials for the this guy, because he was applying as captain with 700 hours logged!!
it is a long story but it came out that the same guy had be working for vueling as well, earlier ,a couple of weeks as captain before being catched and fired. I think the german DGAC should revoke his license once for all!!