When Invisible Children co-founder Jason Russell was detained last week for bizarre behavior, Invisible Children said it was the result of severe exhaustion, dehydration and malnutrition following the release of their viral film "Kony 2012." A new statement from Russell’s family supports this, saying doctors are now treating Russell for "brief reactive psychosis, an acute state brought on by the extreme exhaustion, stress and dehydration." The family said treatment could take months but urged supporters to focus on the Kony campaign in the meantime …