OK, I read all of the posts here since your husband's e-mail to you, but I must admit I'm not all that familiar with your overall sitch. How can I help?
I do agree with the others who have said to NOT get into these e-mail/text flames with him. WAY too much drama from both of you, and I don't see them as being constructive.
Is your husband still in contact with this other woman? His thinking still sounds awfully fogged out to me one year out . . .