Interesting situation, Sorta.
I faced a similar 'conscious' vs to heck with it dilemma at voting time earlier this month. I separated from husband this past May and went to an extended stay hotel. Non-contested divorce so, according to my atty, expected to be done by Sept at the latest. Long story short, his atty has dragged things out and when Sept turned to Oct and the agreement had not yet been filed, I couldn't afford the hotel and moved to a sharing condo situation with an acquaintance who, due to circumstance out of her control is short on $. So I moved in and pay half of what I was paying at hotel per month giving more living space and her the ability to keep the condo. When I informed by spouse about changing addresses, he felt it important to remind me that, since I've not lived at the address on my voting card for over 4 months, they might not let me vote, plus I should have done that anyway after the first month. Said something about minding his own business, hung up and decided not to worry about it as I had more important things on my mind to do.
The Friday before the actual election day, on the spur of the moment, I stopped to early vote. When I was handed a paper to fill out with my address, I decided to come clean. Seems I'm one of those people who always 'do the right thing' and the few times I decide to not be good, I get caught or randomly questioned. So I mentioned my dilemma to a voting official who consulted another one and was given the go ahead to use my old address to vote.
Yes, Sorta, I would tell him and remind him since that account was technically marital property, he owes you half. If it doesn't work/happen, get him subpoenaed to small claims court and see if you can get on either Judge Judy or Judge Marilyn or whomever's show. They'll verbally and legally rip him to pieces.