BS here -
I still wear my band. Not because it has the meaning it once did, but because I'm married, and this is how I tell the world I'm not available. I understand what your H is feeling. I'm not certain if you do or not, but I hope some of the responses here have helped you understand his thought process a bit better. That is, after all, why you're asking, right?
I thought a bit about your post before responding. This next part I say gently, and not as an attack or a criticism of anything you wrote, but as a BS that has a different viewpoint. I hope what I write helps you understand your BH's feelings a bit more. Again - no attacks or judgments here. If you don't find this post helpful, please just ignore it.
You made a comment about thinking your H is still 'settling'. I can assure you, that's not the case. It's not often I speak for more than myself, but I understand how hard it is for a BS to try to reconcile. If the WS was just someone we 'settled' for, we'd never do it. It's too hard, too painful, too overwhelming. If he's willing to R, it's because he loves you and he wants his life to include you, not because he's settling.
Also, much of your post discussed pre-A issues, your own internal conflicts, etc. Gently, right now you need to forget about those things. If R is successful, there will come a point where these things can and should be addressed, so please don't think I'm saying 'too bad, you screwed up so you don't get to ever have any issues or concerns.' I'm not saying that at all. Right now, however, it's very important that you focus on your BH's pain and how to make him feel safe. I may be very wrong here, but it seems like you may be falling back on these pre-A issues as a self defense mechanism. As the pain that the A caused, and the damage as well, comes into view, it's easy to pull back and focus on your pain, not pain that your A caused. We all do this when we feel too much shame about any action we may feel shame about. This isn't just something a WS does. Doing so allows a person to feel less guilt and shame because it's a method of justification, even if we try hard to say that's now what we're doing. I may be wrong here, but maybe give this some thought. If that is happening, it can cause real problems for R.
You did let us know that after your H read his letter detailing what the rings meant pre and post DDay, you threw your own band into the garbage. I think that was what another poster was referring to when theatrics were mentioned. I don't know if it was theatrics, but I do think this type of action should be curbed. As a BS, when my WS used to lash out or act out when I shared my pain and my viewpoints, I always saw it as him not being interested in hearing or understanding my pain. It would hurt, and it also really hindered our R. I needed to know that he cared about my hurt, and that he 'understood'. When he would get angry that I was upset, all I saw was that his interest was in not having to be 'bothered' by my heartache.
Now, years out, he freely admits that it was him not wanting to face the damage that had been done to our relationship. He wanted his 'old' marriage back, where his wife saw him as honest, trustworthy, and never thought about leaving. He didn't want the new relationship, where his wife was untrusting, insecure, all over the map emotionally, and no longer considered her marriage 'special'. Any time it was shown how deep the damage was, and how much pain was there, he would throw up a wall and act as if he was just tired and hurt himself and all the rest. He did stop that, many months after DDay. That's when things improved, because that's when I started to feel like my pain did matter, and that he did regret his actions. Until then, it just seemed like the entire thing was just a huge pain in the ass for him, which made me feel like he just didn't really care all that much about how horrible I felt.
This is my situation, but when I read about you throwing your ring in the trash, it reminded me of this type of behavior from my own fWS. I could be very off base on this as well, but again, it may be something to think about.
WL, I sincerely hope I've not upset or offended you. Again, I'm not judging you - except possibly in a positive way for making the effort to R, posting here, being open, etc. It's not easy, but here you are. I've said all of this only hoping that you may find some of it helpful and maybe see a little more of what your BH may be feeling. I'm not him, so I can't speak for him, but I've seen other BSs state similar feelings that I've written about here when things happen in their own R that are similar, so there is a possibility that some of this rings true with your BH.
WL, whatever you gain or don't gain from my post, I really do wish you and your H success in R. It's not easy, but it can be worth the effort.
Cheers!