Mighty, You've had a lot tossed at you...but there is one thing you need to remember... you are divorced and he fired you as his wife. Right now, Plan A is the ow and you are Plan B. He truly doesn't know what is going to happen and until it happens. I know this sounds harsh, but you've got to lower those expectations to zero at all times. He's not cooked and he's sucking the life out of you and drawing you into his drama each and every day.
He's not going to tell you much of what he's doing because he no longer is accountable to you except for the children. I know that accepting that you are divorce is difficult, but you've got to let him go so that he can find out what he truly wants. Hopefully he'll figure that out, but he's got to lose everything before he will realize that he had everything he wanted right there w/you and the children.
Please, please let him go. Please keep the focus on you and your children. Please take care of yourself.