Its been awhile, it was nice meeting you at the little Dave n Busters gig last summer w/Calystra...
Sounds like you've made strides with regards to working on yourself while he's wending his way through his MLC, OW whatever...
There isn't much more you can do except just move forward with your own affairs. He has to want to recommit, and of course we can't force them to do it.
If you sense things are such that he knows you want the M and he knows you're willing to keep in this holding pattern while HE decides or whatever..then, I would do whatever you can to maybe subtly suggest that time is more or less of the essence and that you're looking for more than what you're having to settle for. AKA, you're not going to WAIT for ever. When you're actions suggest that, perhaps he may take things more seriously, especially if one of the "two nights" out you're referencing, happens to be a friday or saturday, and he's not quite sure what you're up to...
Other than that, it sounds like he does make some overtures towards the M and thats better than him packing up and moving out..
Did you say he still sees & emails the OW professionally? What is your understanding of where that stands?