Nate, Zaino makes a new product called "ZPC Fusion". It is an abrasive that they say is for correcting oxidation and swirl marks. Over at the Zaino website they have details on all their stuff & what each's function is...might be worth a look? Some people speak very highly of ZPC over at the "car care" section @ CF. Maybe post a pic over there to see if those guys have any ideas?
Do you know any professional detailers? Maybe you could pick their brains if they looked at the car to give you their read as to what may have happened to your paint?
Sorry that I have very little knowledge in this area!
Tom