I believe I know what this panel of my trusted advisors is going to say: don't sell your CA house and escape to the country and buy chickens, a flatbed and a sheep - yet. Slow your breathing and your steps and focus on what you can control and your own healing. Stop trying to figure him out. Detach, get some space, go no contact unless about kids. Is that right?
Helpfully I have three diff friends coming out to stay with me in March. And a trip planned with kids in early April to Bentonville, Ark to see my best friend in all the world. I will have lots and lots of girlfriend/margarita time.
It's a great thing to have people that we can run ideas by and obtain a variety of thoughts and views. I question though if we are actually giving "advice" that is useful to you in your situation. Actually can we even do that ( or any of your friends who you will be sharing your story with) since none of us have walked in your shoes, or are we projecting our own situation by advising you what to do based upon what happened in our own personal story?
It's easy for us to become "lost" in the monkey braining that goes on...exhausting too as we wait for the next text or email, the next visit, the next bit of information that we find out about and the ideas we form in our heads about what they are doing.
We are not there to see what they are up to, and what ever we think is happening may or may not be true.
All the advice isn't going to solve what is really the main issue....what do you want for yourself and for your family? When in a crisis, he's not giving you straight answers nor making any attempts to work at saving your marriage...I wouldn't expect him to at this stage.
It's hard to explore and examine options for our lives. We are not on the course that we were before they left. People will give you all kinds of opinions, and it's ok to weigh them...but it really comes down to this.
What do you want for yourself and your family? Taking him out of the equation for it is unlikely he's ready to work on your marriage...as is often said, actions speak louder than words.
You want to be sure that whatever decision you make is because it is something you have carefully weighed, not something that the majority of people think is right for you, but what you come to realize is right for you.
Most therapists will not give their opinion of what they think you should do...good ones anyway. Their job is to work with you so you can discover for yourself what fits. Their crisis causes many huge adjustments in our lives. What we think is "fair"..that they should take responsibility for their children's welfare is rarely the case...they are off in their own world getting their jollies in many ways that do not include responsibility for a family.
Who they were before the crisis, a good father, a loving husband is no longer who they are now and it is hard to see that clearly.
I will continue to encourage you to take your time, to slow down, perhaps stop sending him ultimatums. He is not in the picture presently and has not been for several months. You are taking care of it all..and doing so remarkably well.
Life is a risk. We can never be 100% sure that it will turn out the way we had planned, yet we still need to plan to make our lives work.
Whatever your own plan is, once you can sort that out, will be the right one for you. For today anyway....not to say that your plan cannot change in the future.
It's hard for me to explain my thoughts here...just a few observations from following your thread. My own perspective which may not be anything close to how you perceive things.