One of my 170+ images has part of the description in the tag field, in error. I just discovered when I whent to Edit Album and saw the text broken down into several "tags". Oops! Do I have to go through each image to find the mistake?

I don't know how that could happen, it would be helpful if you could sent a link to the site or at least post a screenshot.

Will do, when I find it. (I know which one but entire album is now unsorted mess.)

Not sure if you still need line/screenshot. It's the one I accidently sent ref. the Trac ticket.

Okay, found the offending photos and neither have the tags in question. So, how do I get rid of these bad tags, I see no method in Admin. Only to add them.

Right, we don't have the possibility to delete tags right now. You would have to use phpMyAdmin or any other tool to delete the tags from the images in question directly in the database.