Wow - Google really does NOT like text-link-ads.com !
LOL
That site itself has a high PR, but a couple sites I've always done very little with... and then later displayed those text-link-ads... have sunk over the past year or so from PR 4 and 5 right down to 0.
I guess it's time to consider revamping those websites by taking off the TL ads and replacing them with adsense or CPA banners or something.
In these cases, I suppose the only tact is to take the ads off, start adding new content, get fresh links, and wait it out for PR to slowly rise again. (don't suppose requesting reinclussion makes any sense if the websites are still indexed and ranking in the SEPS?).
*sigh*