I wish the principal would answer you by email just as you hoped frown. I can see why you don't want another IEP meeting. I can't think on the spot that well when I'm at those meetings where I feel like everyone is against me. Then I get home and all those things I wanted / needed to talk about finally come to me and it's too late. But as long as they are still trying to work things out, I'd go to the meeting and try to keep your cool.