Looks like you and I are in the same exact place right now. Like you, my H has told me he was leaving, research apartments, but still finds himself at home. He told me this two weeks ago and there's been no further movement. Also, like you, this all started at the end of Sept/beginning of Oct.
This is an unbelievable roller coaster. I have no advice. I struggle with the same exact things you do. Some days I just want him out because I can't stand looking at him. Some days I'm scared to death that he will leave. I need a ticker to keep up with where I stand at any given moment.
BUT, you are so right... this is her problem. And you are right that it is a good time to feel liberated and only do for yourself. I used to spend hours cleaning and taking care of my H. Now, I don't do a thing. I have so much free time to do my own thing! I bought a gym membership and signed up with a personal trainer in December. I lost 27 lbs. (started b4 December). It feels so good! So tell me, what are you doing??