Twenty Ten WordPress Theme Header Tweak

Disable replacement of the header image with the page/post featured image in the Twenty Ten theme from Automattic in WordPress

In the header.php file:

<?php
// Check if this is a post or page, if it has a thumbnail, and if it's a big one
   if ( is_singular() && current_theme_supports( 'post-thumbnails' ) &&
      has_post_thumbnail( $post->ID ) &&
      ( /* $src, $width, $height */ $image = wp_get_attachment_image_src( get_post_thumbnail_id( $post->ID ), 'post-thumbnail' ) ) &&
      $image[1] >= HEADER_IMAGE_WIDTH ) :
// Houston, we have a new header image!
      echo get_the_post_thumbnail( $post->ID );
   elseif
( get_header_image() ) : ?>
<img src="<?php header_image(); ?>" width="<?php echo HEADER_IMAGE_WIDTH; ?>" height="<?php echo HEADER_IMAGE_HEIGHT; ?>" alt="" />
<?php endif; ?>
<div id="site-description"><?php bloginfo( 'description' ); ?></div>
<img src="<?php header_image(); ?>" width="<?php echo HEADER_IMAGE_WIDTH; ?>" height="<?php echo HEADER_IMAGE_HEIGHT; ?>" alt="" />

Remove everything above from "<?php" through "<?php endif; ?>" so that after:
<div id="site-description"><?php bloginfo( 'description' ); ?></div>

There is only:
<img src="<?php header_image(); ?>" width="<?php echo HEADER_IMAGE_WIDTH; ?>" height="<?php echo HEADER_IMAGE_HEIGHT; ?>" alt="" />