You know yourself, through your connections with the Serb community that he is a true Serb. You have complained about Serb Americans not helping their ethnic kin in the Balkans, but when he told you of his project to raise money for Serbian orphans, you repeatedly called him a fraud.
If he was a fraud, then why would a well-known Serbian organization in American feature a link to his bike tour on its mainpage - http://www.sane-boston.org/?