According to my research:
Although the Metropolitan cites health related issues as the impetus for this sudden resignation, there seems to be more to the story. Scandal and controversy are seldom far from this high profile heirarch and his right hand man Bishop Vikentios. It cannot be avoided that Metropolitan Paisios and Bishop Vikentios clerical tenure is riddled with unorthodox protocol, having served unrecognized by any canonical Orthodox Church in the world, under the umbrella organization of the traditionalist "Genuine Orthodox Church of Greece". It should also be noted their monestary functioned without any blessing or affiliation throughout much of the 1980's and 1990's.