The church should excommunicate schismatics, who represent themselves as Orthodox, but are self-appointed.
I withdraw this comment if, indeed, the individual at issue is a cleric of the Patriarchate of Moscow, Russian Orthodox Church Outside of Russia, or if he's a cleric of any of the Holy Orthodox Churches; the churches whose prelates are commemorated within the Diptychs. The article had seemed to me as if the individual was self-ordained, or associated with a schismatic entity. If the individual is a canonical cleric, the Holy Metropolis of Hong Kong would not even have the authority to excommunicate. Is excommunication within the authority of a diocesan bishop, or isn't the bishop responsible to bring the matter before the Synod under which he serves? A bishop can bar one of his own priests, monks or laity, from Holy Communion, but can he unilaterally excommunicate a cleric? I wouldn't think he could.