Your posting sounds like his departure went okay. I'm sure he'll have plenty of time to think about your last conversation w/him. He will also have time in the next few weeks to start focusing on himself, his issues, and yes, what he's left behind.
Do not wait too long in seeing a lawyer...you want to ensure that everything is taken care of while it is still "fresh" in your h's mind. They do tend to change up once the cage door has been left open and then their anger sets in and that's when the change in personality takes place and all discussions are off the table.
Enjoy your kayaking lesson. I think you will enjoy it.
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.
