@James, thank you for your well informed, well stated post. Very insightful and I hope you can turn that situation around. It makes me realize that my issue are relatively small in comparison to the impact it would have on sites such as yours.
I'm part of the .0000001% of webmasters affected by this small algo change. Lesson here is not to rely on one strategy because if you do, a change from the top can wipe you clean off the map, across the board. I've largely used EMD's because to me they make the most sense and make the most sense for the end user. I am what I say I am.
The question is, if you have an EMD that isn't affected by this, is it because you are a high PR, authority, or brand site? I'm just looking at whether I should light a match to many of my sites or if they are worthwhile battling for.