Enqueue video script within short code

Not sure if this is the right way to handle it but…

I have a shortcode for embedding videos that take a variable which identifies the video:

/** Add shortcode for videos in course*/
function pq_course_videos_func($atts) {
extract( shortcode_atts( array(
		'vid' => 'something',
	), $atts ) );
echo '<div class="pq-video-player"><script type="text/javascript" src="http://www.videohost.com/embed.php?v=' . $vid . '&statTrack=&w=570&h=321"></script></div>';
}
add_shortcode('pq_course_videos', 'pq_course_videos_func');

When, for some reason, the video is unavailable the entire page beyond the video won’t load until the video host’s server times out.

It there a way to enqueue the script within the shortcode so that it doesn’t try to load until the footer of the page? Or is there another solution?