public function removeFollower($follower)
    {
        $leader = $this->_mixer;

        if ($leader->isSubscribable()) {
            $leader->removeSubscriber($follower);
        }

        $this->removeNodeSubscriptions($leader, $follower);

        if ($leader->isAdministrable()) {
            $leader->removeAdministrator($follower);
        }

        $this->getService('repos:actors.follow')
        ->destroy(array(
            'follower' => $follower,
            'leader' => $leader,
        ));

        $this->resetStats(array($leader, $follower));
    }