He is still in the fog, that's why. Deep in his heart, he knows what he is doing is wrong. H told me once, "the pull (from OW) is very strong". It is really like an addiction.
In regards to wedding ring, I am not wearing mine. He got mad at me once asking "why you are still not wearing your wedding ring?" (i am still not ) I told him because "there are still 3 people in this R". That was a few months back, after he "broke up" with OW. But of course, to me, the contact is still there so I told him he was still having A (with the contact) hence still a 3 person R. He has not forced me to wear it. I did put it on once in July to go with him to a business dinner (as the corporate wife as I told you before) and I did wear my ring. He did notice and thanked me for wearing the ring. But I took it off the next day. No reaction from him. This is my silent protest to him.
There is a thread somewhere by heartbless? in MLC archive? I think talk about 6 stages of MLC. I remember it mention at somepoint they will relive almost all the stages before re-committing. I think that's why there is this roller coaster and indecisiveness. Hang in there, he misses you certainly (of course, there is the other half he misses ow also). But hang in there, you will be OK. I have a good feeling for you.
