I'm also not on board with the whole idea of my eating disorder being 'Ed', a separate entity outside of myself. I feel like this view takes a lot of personal responsibility off of the sufferer (me) to work towards recovery. I like Carolyn Costin's idea of the ED being part of yourself, as it was there at one point to serve some sort of purpose. I see myself in two parts: my 'ED self' and my Healthy Self. In order to make steps towards recovery, I have to strengthen the healthy self part of me (squashing the ED self in return!).
Hope that helps. It sure helps me to think of it that way.