Sorting: custom query with orderby meta_value_num THEN by title

i try to run a custom post type query to match following criteria:
sort movies first by year in descending order,
after that (“inside” the year order) by title alphabetically.

desired output:
movie title A, 2006
movie title Z, 2006
…
movie title A, 1996
movie title Z, 1996

i use the following code:

$wp_query = new WP_Query();
$wp_query->query( array(
'post_type' => 'movies', 
                      'distribution' => 'companyA', 
                      'meta_key' => 'year',
                      'orderby' => 'meta_value_num title',  
                      'order' => 'DESC', 
                      'posts_per_page' => -1, 
                      'post_status' => 'publish',
));

i tried several things but i can only get this “inverse” result:

movie title A, 1996
movie title Z, 1996
…
movie title A, 2006
movie title Z, 2006

if i change DESC, ASC it only changes the title sorting. but i need to apply it to the year and not to the title.

is it the right way to use two orderby values? or do i have to use a meta_query or custom SQL ?

thx in advance!

Here is the resulting SQL Query from $GLOBALS['wp_query']->request

SELECT wp_posts.*

FROM   wp_posts

       INNER JOIN wp_term_relationships

               ON ( wp_posts.id = wp_term_relationships.object_id )

       INNER JOIN wp_postmeta

               ON ( wp_posts.id = wp_postmeta.post_id )

WHERE  1 = 1

       AND ( wp_term_relationships.term_taxonomy_id IN ( 24 ) )

       AND wp_posts.post_type = ‘movies’

       AND ( wp_posts.post_status = ‘publish’ )

       AND ( wp_postmeta.meta_key = ‘year’ )

GROUP  BY wp_posts.id

ORDER  BY wp_postmeta.meta_value + 0,

          wp_posts.post_title DESC 

This is very crude but should sort your posts by year (meta_value) and then by title. It does depend on how the query is setup so it will only work with the query below or with similar ones.

function alter_order_wpse_103181($order,$qry) {
  remove_filter('posts_orderby','alter_order',1,2);
  $order = explode(',',$order);
  $order = implode( ' ASC,',$order);
  return $order;
}
add_filter('posts_orderby','alter_order_wpse_103181',1,2);

$q = new WP_Query();
$q->query( array(
  'post_type' => 'movies', 
  'distribution' => 'companyA', 
  'meta_key' => 'year',
  'orderby' => 'meta_value_num title',  
  'order' => 'ASC', 
  'posts_per_page' => -1, 
  'post_status' => 'publish',
));
var_dump($q->request);