CPT display only related

<!-- other posts -->
   <?php
     //get the post's terms (troubleshooting - can be removed once figured out!
$category_terms = wp_get_object_terms($post->ID, 'category');
if(!empty($category_terms)){
  if(!is_wp_error( $category_terms )){
    echo 'Terms <ul>';
    foreach($category_terms as $term){
      echo '<li><a href="'.get_term_link($term->slug, 'category').'">'.$term->name.'</a></li>';
    }
    echo '</ul>';
  }
} //get post terms done
?>
 <?php
//for a given post type, return all
$category_terms = wp_get_object_terms($post->ID, 'category');
$post_type = 'program_listings';
$tax = 'category';
$tax_terms = wp_get_object_terms($post->ID, 'category');
if ($tax_terms) {
  foreach ($tax_terms  as $tax_term) {
    $args=array(
      'post_type' => $post_type,
      "$tax" => $tax_term->slug,
      'post_status' => 'publish',
      'operator' => 'AND',
      'posts_per_page' => 5,
      'caller_get_posts'=> 1

    );

    $my_query = null;
    $my_query = new WP_Query($args);
	    if( $my_query->have_posts() ) {
      echo '<h2>Other programs in the '. $tax_term->name. ' category</h2> ';
      while ($my_query->have_posts()) : $my_query->the_post(); ?>
        <p><a href="<?php the_permalink() ?>" rel="bookmark" title="Permanent Link to <?php the_title_attribute(); ?>"><?php the_title(); ?></a></p>
        <?php
      endwhile;
    }
    wp_reset_query();
  }
}

?>

<!-- end other posts -->