Sally,
Why not write him a letter and send it snail mail? Your email was sent in relation to your frustration of not understanding what was going on, and you have a right to your own feelings, including anger and rage. When people are traumatized, their impulse control and cognitive filter are one of the first things to go (at least with me they are).
Your therapist, although it really sounds like he is having issues, well, I wish he had been able to do this in a less destabilizing way. It sounds like he is destabilized at this point. That doesn't change the fact that what you are going through is absolutely hellish. I am rooting for you big time!!!! PM away, I can handle it