require_once 'wordpress/wp-load.php';
wp_footer();
Maybe you have to remove some things from the footer-file (e.g. Powered By WordPress). With var_dump( $wp_actions ); you can see which actions was executed (a list of action hooks). And with var_dump( $wp_filter['wp_footer'] ); you can see which actions are registred for the specific hook (here wp_footer).