One of the coined phrases here is "when in doubt, do nothing". What that means is if you aren't sure about an action, sit on it a while and the anwer will come as to how to handle the situation. It does not mean waiting something out for a long period of time. Sometimes the problems resolve themselves on their own and others require further research and not a gut wrenching reaction.
Waiting for someone to come out of their crisis could take forever. Some may surface in a couple of years, others 3-5 and then there are the ones that love the crisis so much that they remain stuck forever. You do not want to try to wait out their crisis.
Dropping the rope means to let go entirely and live your life to the fullest. It means that you go on w/your life as if they have died or gone to live on another planet and you have been forced to live your life as a widow/widower. It means that you don't have expectations and you learn how to not react to what they say or do. You do not put your life on hold for them because life moves along and each and every day things change. If you put your life on hold or wait for them, you may lose out on the most precious times of your life. You have so much to give and there is so much to learn and you do not want to remain where he left you...dropping the rope is accepting the fact you need to take care of yourself, rely on yourself and have faith in God. Sometimes what we ask of God is not what God give us. He gives us what we need.
Dropping the rope was one of the hardest lessons I had to learn years ago, but once you let go, the world opens up to you and you begin to see life a bit differently. You see the light of day and do not fear the world. I was once told that I had nothing to fear but fear itself. Many people think that if you drop the rope, you've lost all chances of reconcillation. Not true. There have been a few people I know that dropped the rope and when they did, the dynamics of their situation changed and the changes were for the better.
The decision is yours as to whether you want to "wait" this out or continue on your journey and discover the world. No one is saying you have to kick him out or divorce him, but you also don't have to "wait" either. What you can do is live your life as if you are flying solo, experiencing everything that the world has to offer. If he should wake up, he will need to paddle double time to catch up w/you because you will have experienced far more in the world than he has during his journey. He will need to prove himself to you and earn your trust and loyalty back.
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.