Ambivalent, It takes a while for them to go into the full blown crisis and from what you posted, he had been leading up to it for over a year. Generally, the leading up period is 12-18 months, so, by my estimation, he's in early/mid replay. I do hope that he continues to be a calmer MLCer versus an angry monster type.
It is difficult to focus and remember things when you are shell shocked. In time, you will be able to focus once again. Just be kind to yourself and don't make too many demands on yourself. Take each day as it comes and minute by minute. Keeping things in "small" steps is far better than trying to accomplish large tasks right now.
Try to enjoy your upcoming holiday w/your family. Most of all, try to be yourself and leave the MLC shadow at the door.
Take care of yourself.
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.