Maybe if enough people who got hit post their on page and off page SEO techniques for those pages, we can find some similarities and truly know what to avoid.
I am using UAW with spun articles btw directly to my money sites, basically exactly what you're not supposed to do and my sites all went up. I don't do much on page SEO though. I dont try to go for 2-4% kw density or bold and italic everything and internal link everything. SO maybe theres an over optimization penalty going on