Hmm, you could try this:
function wpsp_social_sharing_shortcode() {
ob_start();
echo get_the_title() . wpsp_social_sharing( get_the_ID(), $twitter = true, $facebook = true, $googleplus = true, $pinterest = true, $love = true );
wp_enqueue_script( 'wpsp-love-it' );
$output_string = ob_get_contents();
ob_end_clean();
return $output_string;
}
add_shortcode( 'xxx_wpsp_social_sharing', 'wpsp_social_sharing_shortcode' );