Hi 503penn,
You can do so the way hgmartin described above. Locate your listing in your Saved Listings folder, remove the unwanted image, and save. Then go back to your Saved Listings folder, check the box next to the revised listing, click the "Get HTML" button, and copy the html from the popup window.
Then, when you go to relist through eBay, paste the copied html in the html view of the description and you're all set.
-Mike