List organizers within single-tribe_organizer.php

// Load events relating to the current organizer
// (assuming we are inside the loop within single-tribe_organizer.php)
$events = tribe_get_events(array('meta_query' => array(array(
    'key' => '_EventOrganizerID',
    'value' => get_the_ID(),
    'compare' => '='))));

// Build a list of related events
echo '<ul>';

// If none were found...
if (count($events) === 0) echo '<li> No events </li>';

// Or each event title...
else foreach ($events as $event)
    echo '<li>'.esc_html($event->post_title).'</li>';

// Close the list
echo '</ul>';