Hi Snowyl and welcome to the board! I think you will find a tremendous amount of support and resources here to help you.
This must be a very difficult time for you as you realize that the person you've been with for 17 years and have built a family and a life with is mentally ill. You begin to question the love you've received from them up till now. And now that you've finally started implemented boundaries, that person has spun even more out of control than before. I am starting to face the same with my partner and now wife of 10 years and mother of our two children and it can really be too much some times.
Good for you for seeing a therapist and working to take back your life. What was it about your independent time that you enjoyed the most? In order to have that with your husband, what kind of boundaries / expectations would you need to establish?
I think before you can make a call on the chances for your marriage, you need to get more clarity on your situation and "find your footing". With so much chaos, it's difficult to achieve a "situational awareness" of what's going on and has been going on. I think the fact that your husband is not home at the moment might be a good opportunity to more deeply examine your role in the relationship and what action you can take on your side instead of waiting for your husband's next move.
In the meantime, you might also want to set a boundary about whether or not you'll respond to his texts and consider blocking him if it amounts to harassment and is causing you too much grief.
For a reference from my own situation, right now I'm trying to radically accept the reality that my wife has this illness and is not capable of being in a true marriage relationship with me right now. I'm also accepting that there's no promise she will eventually get help and that I may have to allow for a future with someone else. "Radical Acceptance" doesn't mean I like or approve of the problems, but rather acknowledge that they are real and not going to go away no matter how hard I wish or pray. Only once we are fully honest with ourselves the truth of our situation can we begin to change it.
Here's the workshop on it:
https://bpdfamily.com/message_board/index.php?topic=89910.0I also strongly recommend coming to the board for support and engaging with other members. It really has been the greatest help to me since my wife's BPD came to light.
Hope this helps. Hang in there!