O.k. did I understand that correctly, they will not do treatment till the thyroid is burned out by the antibodies? If this is the case get a new doc fast! You can suffer for a very long time before this can happen, a lot of people are treated on the presence of symptoms and antibodies alone (me included) you just have to find the doc that will do it, they are out there.
As for the Hurthle cells, I have no idea but I would question the doc a little more about that, don't be afraid to ask anything you want to know, they have to tell you and you have the right to know.
Perhaps someone else will have more info about the Hurthle cells that they can share with you.