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Laidlaw, With any of the engines, when changes are made it really is difficult to know what will happen. I would think you are close to seeing them back in the rankings but it is hard to say without knowing the site. For us, when we make changes we are almost always surprised at how fast or slow they change. When they do reappear, do not be surprised to see some ranking swings for a little while. You mentioned redirects toward the end, I am assuming these are 301's, if so did you go url to url and do so in the .htaccess file? If not, this could be the culprit. Hope this helps

What do you mean by over-optimized?

The URLs did not change - the traffic has not plummeted dramatically (slightly yes, but not dramatically) - the rankings for words (like the example "organic t shirts") have dropped however.