CC, I'm sorry you are having a difficult time today. Sometimes, even when we think we are detached, we still have that one little thread of hope that keeps us dangling. It's okay...we have expectations that we look for in the person that our spouse once was. I think what is the most difficult is seeing the person you have loved for a long time standing there, and yet, their personality has become the mirror image of the person you knew (exact opposite). What is difficult is learning to accept him for who he is today.
You can't rush the process. You are now on his clock. His mlc clock will run extremely slow because it's gone back in time and he's become that teenager once again. While life is rushing by us, he's living in a different world that only involves himself and exploring things that he may not have explored previously. I know you want it to end today, but it can't. He has to finish growing up. No one can predict whether his crisis will end in a year or so, but forever is a very long time. Hopefully he will not remain in Forever Land w/Peter Pan.
If he wakes up, it will not be a sudden awakening. It will be a very gradual one, i.e., just like when he entered mlc. So gradual, you may not even notice his pending descent back to Earth.
Just remember, nothing is as it appears. He may appear to be having a jolly time, but I wouldn't want to be in his shoes. Why? Because when night comes, he is alone w/his thoughts and they are not pleasant ones. The inside of his head is a jumbled mess of confusion, paranoia, fear, etc. No, they really aren't having a jolly time because they are self-medicating for the internal pain that they are feeling. Some can describe the pain and others can't. It is like they are being choked, being squeezed to death or even thinking they are actually dying a slow death. No, it's not a jolly time. Please do not be fooled by the masks they wear. Wearing masks gets very tiresome and in some cases the masks will begin to drop and tears will fall, the weary look around the eyes will appear, the sparkle in the eyes disappears and you will see that deer in the headlight look. No, they aren't having a jolly time.
CC, trust me, you have living a far better life as a rational adult. Keep the focus on yourself and your family. Allow him to travel the Earth to find himself.
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.