ORIGINAL: Hossfly
2005 Safety Code, now General #6: "I will not fly my model aircraft unless it is identified with my name and address, or AMA number, inside or affixed to the outside of the model aircraft. This does not apply to model aircraft flown indoors."
OK, we've establishe that the guy didn't have his name/address on the plane and therefore would not technically be covered by AMA insurance in the event of an incident....but that does not by default give the second guy the right to keep the plane.
I guess technically, he did not steal the plane because it was found in a field. However, he does know who the rightful owner is and refuses to return it. That is the type of person I wouldn't trust or want in my club. The officers should take action to kick him out. Others should give him the cold shoulder.
That's JMO.