redwhiteandblue

It's not thin content, that doesn't get you de-indexed. It's not ads or pop-ups.

Check these out:
Recreation and Sports | Certified attorneys, lawyers for any situations and purposes
Recreation and Sports | Legal issues and lawful legislation of the Antarctic government
Recreation and Sports | IMAX movies, top quality motion pictures with great visual effects
Recreation and Sports | Golden jewelry, precious metals and best prices on the market

and there's a shit ton of other pages like that with your link. That'll be why you've been de-indexed. Where did you buy those from?