gistfile1.php

        global $post;
        if (basename( get_page_template() ) != 'some-template.php') {
  			  $featured_image_post = get_featured_recursive($post); 
				  if ($featured_image_post != null) {
					  $featured_image_src = wp_get_attachment_image_src(get_post_thumbnail_id($featured_image_post), 'single-post-thumbnail'); ?>
					  <img src="<?php echo $featured_image_src[0]; ?>" alt="<?php the_title(); ?>" /> 
				<?php } 
          else {
              if (has_post_thumbnail()){
                //output the thumbnail normally
              } 
          }
        ?>