By default, your Plugin will rotate 3% of the total ad impressions publishing your own ads to someone else's website in which AdSense manager is activated, can you kindly confirm this? And upon upgrade of the plugin version, will it overwrite and revert back the same 3% Be Nice value?
I think Clayton's point was crystal clear. The manner you took care of the previous Google issue was unethical when you were very well aware of it. What is not "explicit" with "Your Site(s)"? The New York Times site doesn't become yours should they decide to use your plugin, does it?
Actually, Google was very very nice to overturn the banning of your AdSense account. A lot of innocent people who never had legions of people lobbying for their account to be salvaged could have deserved the same treatment.
With that said, I think you are a bright, if not cunning, entrepreneur and programmer. Hell, if you released this plugin for a 1$ charge per download, it would still sell like hotcakes. I just think you were not forthright about your business practices. If my instincts were right, you followed the footsteps of the author of "AdSense Deluxe" who did the same thing.
At any rate, you deserve to be rewarded for the fruits of your labour in an ethical means. Good luck to you and your future endeavors.