When I installed this and put in a few terms, I checked a page that had the terms in it. The image had disappeared from the page.
Before I activated the plugin, this is the final HTML output of that part of the page:
<h3><a href="http://emanuelsynagogue.org/wp-content/uploads/2009/07/Tot-Shabbat.JPG"><img class="alignright size-medium wp-image-201 colorbox-199" title="Tot Shabbat" src="http://emanuelsynagogue.org/wp-content/uploads/2009/07/Tot-Shabbat-300x216.jpg" alt="Tot Shabbat" width="250" height="180" /></a>On Shabbat:</h3>
After I activated the plugin:
Note that none of the words in the affected text are actually part of the glossary.