I would caution you not to make things up with FB. Use it to report your genuine successes, not as a trick. Otherwise they will probably see through it. Keep it positive and a little superficial too, no bashing your H. You want it to show how well you are doing, not how upset you are.
Another wonderful benefit is to you get to reconnect with friends and family whose support you need right now. Just be careful that they know not to discuss your situation on FB.
I would think twice about fake OM emails though. It just lets him think his actions are justified and can escalate your situation very quickly. Besides, you are way classier than he is. Don't let him think you have to depend on some OM, real or pretend. Let him see you stand on your own. It will truly be harder for him to cope with you showing strength and self reliance than believing you stooped to his level anyway.
As far as talking, I would wait. Take some more time to detach, protect yourself, and sort out the specifics of what you want. Closure is often a myth anyway. Real closure is when you can let go of the need for an answer.
