Before going any further I need to state:
I am not condoning any behavior that is against the Google TOS. I am presenting the thought for DISCUSSION PURPOSES ONLY.
If someone is having issues getting an adwords ad approved, it is possible, assuming Google doesn't re-check the page that the ad links to after they approve the ad, that the person in question could get an ad approved and then change the content on the page to something that Google might have not approved in the past.
Thought on this?