You can rebuild them if you want. I had to go through pretty much EVERY thread and post on the website trying to get Google to re-enable the ads. There is no way I, or even a small army could have gone though 300,000 pages. Which is what Google wants.
They send a not saying "you have a violation, here is an example, however there may be more", then expect you to go through and find them all. I already tried once (4 hours worth) and apparently missed some. What gets me is they already have a list of them, so why not provide them.
I'm seriously about to tell Google where they can shove it.