On Russia's Far East Fringe, Unrealpolitik
Politics takes a turn toward farce in Vladivostok, far eastern Russian port, which has become an object lesson in how hard it can be to raise a democratic society out of ruins of Soviet empire; a power struggle is being waged by autocratic Governor of Primoriye region, Yevgeny Nazdratenko, and Viktor Cherepkov, the highly eccentric mayor of Vladivostok until he was ousted from office in December; Cherepkov claims extrasensory perception; Nazdratenko has received a mysterious $1 million prize for leadership from World Aristocratic Academy, an organization whose only known address is a post office box in the Bahamas; photos; map (M)