Thank you for your update, LH...
A really great post.
Do you mean that you didn't think Plan B was about making your marriage work? Because you did a plan FU (no, not in the literature) which Dr. Harley says will happen if you don't Plan B.
What you did is you came to your hard and fast boundary...and you enforced it...not Plan B, no way back, and had your WH taken you up on your request that he leave, you might not be where you are right now...and that's good, too. Contact continues the A...and Plan B isn't about ending your marriage; it's about ending the A.
And saving yourself from a plan FU outburst.
However, like you, I believe God works. He works in your marriage, your heart, your life...and in your WH's.
The continued contact was continuing his A, so treat this as your second DDay...when he really went no contact...instead of pretend. And that's a new way I hadn't thought of to get around, traceless contact...and for you to accept.
I'm glad he told you about it...and talk about possibly verifying...in this way...you have the password to her email, too...to check saved drafts. No secrets between spouses...take it the distance...his job to act transparently, yours to verify.
There will be withdrawal...will come after true NC...and it may be hard...remember OW is a fantasy...you're reality...and mostly the urge to continue a routine is there, not real feelings...and mourning the fantasy feelings.
Please hold to the way back into the marriage boundaries...NC, counseling, following the four rules of marriage...and continue to thrive. Your personal recovery is well underway...you might become a little impatient with his beginning personal recovery...or his progress with marital recovery, at times...know there are two recoveries going on different time lines.
Also, like you said "nearly against his will" isn't real...we have no control and you recognized that WH wouldn't have chosen to go to counseling against his will...he chose to go. He chooses to stay. He chose not to leave. And you can offer--only he can choose.
Same with God...always offering...be sure to receive.
Lastly, understand for yourself that your WH choosing NC and sticking to it isn't choosing you over her...it's him choosing his marriage over an outsider. It's a new healthy boundary to HELP himself to stay focused and true...just as he wants to be...an aid, not a "I do it so I don't lose you" which is real...only further, lose The Marriage.
For then he can honor The Marriage, even when he doesn't feel like honoring you (in those moments of resentment, entitlement, lack of respect). There's the difference...part of how not to do what he did...and that's his personal recovery...yes, it guards and honors you, too. For you never stopped being an ally of The Marriage...he did.
LA