fit, I would sit on this email for a while and not be so quick to respond. When you do, say "h, I'm very sorry that you feel the way you do, but I still need some time to adjust to the fact that we are divorcing. Just give me some time. Okay?" I wouldn't say anything more and leave it be.
I would like to know what his rush is all about in this matter. He's speaking the mlc lingo loud and clear. Then again, this man could be very rational and just wants out of the marriage. We shall have to wait and see how he responds to your email later in the week.
Fit, keep the focus on you and what you will need to do if he follows through on this divorce.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.