You seem to be contradicting yourself a little bit, and I dont say that to be rude....but merely to point out you may not quite be thinking completely clearly about the subject
One - this isnt the end of the world. There will be no point in anyone's journey that they are issue free. There isnt an endpoint. There will be bumps, this is one. You identified it. Good job! And you are trying to figure out the issue and stop it. Also good job! Be a little more self compassionate, you are doing amazing. Not only on your weight loss journey it seems, but ya know in life...with that super busy schedule you mentioned.
Two - calmly and clearly think this issue thru. You mentioned a few things that seem like true facts: you do this alone, at night, when stressed. Then you made a few contradictory statements (like you cant workout more because you are busy, if you can binge you can workout). So be honest, and sort out the details with yourself. I am not claiming to understand, only you do. But just take a few minutes and think about the problem before you try to solve it or excuse it.
Three - make a plan. I dont always believe in solutions, they sound final. I have been *actively* dealing with weight loss maint for 10 years and it never ends. I dont have a solution. I have the desire to make plans, find things that work (until they dont anymore), adapt, and keep at it. If you know stress is the issue (my big one too!), work on plans to reduce stress: acupuncture, working out, meditation, etc. Dont say you dont have time. You matter, this matters, its making you feel out of control - figure it out. Tell your husband you need his help if you do! Make a plan about what you do next time you are super stressed and alone? Can you as someone said write it? can you make an emergency phone call? can you promise to post about it here?
Remember your success isnt overshadowed by ongoing issues. It is just part of being fortunate enough to actually be in maint! A lucky one. I see it like that joke about aging...if you are old enough to be worried about the signs of aging you are still alive and that is a gift!