This doesn't solve the Google Adsense errors, which there doesn't seem to be a solution to. However, as per my first post on how to load the ads at the bottom of the page, and then move them via javascript and css. I realized that actually moving the element in the dom causes it to refresh, which is a violation of Google's tos. However, if you just move the ads relative to the holder by using javascript to absolutely position them (but leave them where they are in the dom) that works fine. And if any part of the page expands, just have the ads repositioned again when you do that.
This seems like a better solution than an iframe, since it's on the same page, and Google can easily crawl it for content and relative ads. It also works with any ads, not just Google.
-Mark