NB: If one claims the label "gay" then he is claiming that the disordered desire to engage in homosexual acts is fun and a positive aspect of his life. Someone with that attitude should NOT be a shepherding a Christian flock, whereas one who HATES and resists the temptation to act out homsexuality could make a fine priest.
Its like an alcoholic claiming that having the uncontrollable desire to drink is a fun and enriching aspect of his life. Someone with this attitude should not be leading a flock either, whereas one who hates this addiction and fights it could make a fine priest.
I don't think being gay is disqualfying for the priesthood. Engaging in homosexual acts is however. Priests tale vows of chastity. Priests deny themselves lust whether it's homosexual or heterosexual lust. To say one is acceptable and the other isn't doesn't seem to be right. Both types of lust are not to be acted upon. And neither of them are compatible with the priesthood.