Show only certain roles in a user listing

Hi,

I'm setting up a small site for an amateur sporting organisation and want to create a contact list for coaches and managers. Views 2 does this nicely, except, when a user has another role (eg club president), both roles are included in the listing. Filtering the user listing by role is easy, but the listing still shows the other role that I don't want include. Is there some way that I can exclude the output of those roles that I have filtered out? I've tried messing around with arguments, but this is not my strength. I've included the exported code below, if that's any help. Thanks.

Finally, a deep-felt personal thanks to merlinofchaos for Views and everything he does for the Drupal community. There are a number of reasons why I use Drupal, but without doubt, Views and CCK are the top two.

$view = new view;
$view->name = 'coaches_managers';
$view->description = 'List of coaches and managers for Contact Us page';
$view->tag = '';
$view->view_php = '';
$view->base_table = 'users';
$view->is_cacheable = FALSE;
$view->api_version = 2;
$view->disabled = FALSE; /* Edit this to true to make a default view disabled initially */
$handler = $view->new_display('default', 'Defaults', 'default');
$handler->override_option('fields', array(
  'rid' => array(
    'label' => 'Coaches and managers',
    'alter' => array(
      'alter_text' => 0,
      'text' => '',
      'make_link' => 0,
      'path' => '',
      'link_class' => '',
      'alt' => '',
      'prefix' => '',
      'suffix' => '',
      'help' => '',
      'trim' => 0,
      'max_length' => '',
      'word_boundary' => 1,
      'ellipsis' => 1,
      'strip_tags' => 0,
      'html' => 0,
    ),
    'type' => 'separator',
    'separator' => ', ',
    'empty' => '',
    'exclude' => 0,
    'id' => 'rid',
    'table' => 'users_roles',
    'field' => 'rid',
    'relationship' => 'none',
  ),
  'name' => array(
    'label' => '',
    'alter' => array(
      'alter_text' => 0,
      'text' => '',
      'make_link' => 0,
      'path' => '',
      'link_class' => '',
      'alt' => '',
      'prefix' => '',
      'suffix' => '',
      'help' => '',
      'trim' => 0,
      'max_length' => '',
      'word_boundary' => 1,
      'ellipsis' => 1,
      'strip_tags' => 0,
      'html' => 0,
    ),
    'link_to_user' => 0,
    'overwrite_anonymous' => 0,
    'anonymous_text' => '',
    'exclude' => 0,
    'id' => 'name',
    'table' => 'users',
    'field' => 'name',
    'relationship' => 'none',
  ),
  'contact' => array(
    'label' => '',
    'alter' => array(
      'alter_text' => 0,
      'text' => '',
      'make_link' => 0,
      'path' => '',
      'link_class' => '',
      'alt' => '',
      'prefix' => '',
      'suffix' => '',
      'help' => '',
      'trim' => 0,
      'max_length' => '',
      'word_boundary' => 1,
      'ellipsis' => 1,
      'strip_tags' => 0,
      'html' => 0,
    ),
    'text' => 'Contact',
    'link_display' => 'link',
    'exclude' => 0,
    'id' => 'contact',
    'table' => 'users',
    'field' => 'contact',
    'relationship' => 'none',
  ),
));
$handler->override_option('filters', array(
  'rid' => array(
    'operator' => 'or',
    'value' => array(
      '4' => '4',
      '5' => '5',
      '6' => '6',
      '7' => '7',
      '8' => '8',
      '9' => '9',
      '10' => '10',
      '11' => '11',
    ),
    'group' => '0',
    'exposed' => FALSE,
    'expose' => array(
      'operator' => FALSE,
      'label' => '',
    ),
    'id' => 'rid',
    'table' => 'users_roles',
    'field' => 'rid',
    'relationship' => 'none',
    'reduce_duplicates' => 0,
  ),
));
$handler->override_option('access', array(
  'type' => 'none',
));
$handler->override_option('cache', array(
  'type' => 'none',
));
$handler->override_option('title', 'Coaches and Managers');
$handler->override_option('style_plugin', 'table');
$handler->override_option('style_options', array(
  'grouping' => '',
  'override' => 0,
  'sticky' => 0,
  'order' => 'asc',
  'columns' => array(
    'rid' => 'rid',
    'name' => 'name',
    'contact' => 'contact',
  ),
  'info' => array(
    'rid' => array(
      'separator' => '',
    ),
    'name' => array(
      'sortable' => 0,
      'separator' => '',
    ),
    'contact' => array(
      'separator' => '',
    ),
  ),
  'default' => '-1',
));
$handler = $view->new_display('page', 'Page', 'page_1');
$handler->override_option('path', 'coaches-managers');
$handler->override_option('menu', array(
  'type' => 'none',
  'title' => '',
  'description' => '',
  'weight' => 0,
  'name' => 'navigation',
));
$handler->override_option('tab_options', array(
  'type' => 'none',
  'title' => '',
  'description' => '',
  'weight' => 0,
));