IMHO and it is only an opinion, your H will finish his crisis. I can not say when that will be as most men can take between 2-7 years to finish. So what SA has written to you is correct. Only you can really decide. None of us know how long this will take or how many twists and turns it will make.
Right now you are lucky he is 5000 miles away. When does he come home?
Your R is not going to change while he is away. I assume when he comes home he will be thrilled to see you. Assuming you still want him. After that it is hard to say. Then the really HARD work will start.
You have been on a hard journey so far. You have overcome some of your own demons, I am sure you still have more work to do. So will your husband.
I would not pressure him now but when he comes home you will want to know if he is going to be faithful to you. You will want some transparency in that.
I am sure there are some other boundaries that you will need. None of us can predict the future. So when he is here we will see what happens.
