Pink, Your h is still in MLC and he still has a lot of baking to due in the MLC oven before he's reached the end of his crisis. There are times when they have a huge moment of clarity (which I think your xh had) and they have to talk about themselves and what they've done to others. Once that is off their chests and we have listened and accepted their apologies, many of them go right back down in the rabbit hole.
Yes, your xh misses you as a friend, but time will tell just where he's at and if the rabbit hole has reclaimed him.
You did excellent in listening, etc. Continue as you have been and keep the focus on you and your family. Leave it in God's hands for now.
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.