[calorie]

Untested but maybe a plugin at the cache_templates hook:

// if we are in the CMS and the article page temple is there
// then define a constant for use in a template conditional

if (THIS_SCRIPT == 'vbcms' && in_array('vbcms_content_article_page', $cache))
{
	define('ON_ARTICLE_PAGE_ONLY', true);
}

And then the following template conditional in the footer:

<vb:if condition="defined('ON_ARTICLE_PAGE_ONLY')">
	blah blah blah
</vb:if>