Great, except default 2011 header images show up.

I am using Add Custom Header Images with the WordPress Twenty Eleven theme. It works great except that there seems to be a bug. The Twenty Eleven theme comes with a number of default header images that show up along with the images I had uploaded to the “The Headers” page for the plugin to use.

I did a hack to fix this using a tip from Voodoo Press: http://voodoopress.com/adding-and-removing-default-headers-in-twentyeleven/

// REMOVE SOME DEFAULT HEADERS
function voodoo_header_out() {
    unregister_default_headers( array(
        'wheel',
        'shore',
        'trolley')
    );
}
add_action( 'after_setup_theme', 'voodoo_header_out', 11 );

If you do this, be aware that the array of default images in the example is incomplete. You will have to add the rest of them.