I just finished reading through all of this, I wasn't dis'ing when this thread started because I was in the middle of dealing with a rotten/complicated issue for my disabled adult son for whom I'm legal guardian. i'll make a few suggestions based on my (admittedly dated) social services experiences, current guardianship status, having recently dealt with scores of community and government agencies, and prior p.o.a. experience for mom/mil.
here goes-
you can't force someone into a nursing home. if you've got a p.o.a. usually they only kick in if someone is deemed incapable of decision making. in our experience (w/mom and mil) it takes an act of god to get a doctor to do that if the patient is even remotely lucid. with a senior citizen you at least have adult protective services that might be able to come in to a home and make an evaluation that will substantiate the person's inability to care for themselves-before a person hits 60 though it's almost impossible without their buy-in to make the nursing home move (and that's if it can be financially afforded). even with the full blown guardianship I have on my son-in my state I am VERY restricted on decisions that entail putting him in care or rehab facilities (rightly so-there have been abusive cases in many states where guardians basically warehoused disabled persons to retain control of their assets/incomes so I absolutely support this provision and oversight).
financially affording it-as others have said, there are strict rules before Medicare or Medicaid will cover it, and then a hospital stay generally has to precede the placement (and the doctors have to be on the same page that it's necessary). the link you posted o/p-it's from that state's department of aging, and from personal experience I would suggest before you base ANY decisions on it (or what a lawyer who refers you to it says)-check with the actual agency to see if you or your husband (who I am guessing is under 60) fall under any of it's provisions. speaking of lawyers-if you are in low income housing-don't pay for a lawyer, call legal aide b/c you probably meet the criteria (though if your dh had $4000 sitting around that he could give/have taken by his sister-then if he's receiving SSI you need to watch out b/c if they find out he (which includes you) are misrepresenting your assets it's not only losing eligibility to the program it's defrauding it and a violation of federal law). I think though, from the dollar amount you mentioned trying to protect w/the spousal impoverishment rule your husband is getting ssDi in which case there's no issue w/ assets (though your low income housing could have rules about it). if your husband is on Medicare though (which comes with ssDi after a period of time)-is he also on Medicaid? if so-again those assets have limits so be careful. if he's not on both-you need to look into it b/c Medicare only pays for a short amount of skilled nursing care which is why unless people have the financial resources to pay for it the whole issue of looking at Medicaid and the spousal impoverishment concept comes up.
as for figuring out what to do-just for the heck of it, call the ombudsman listed on the link you provided. 'yes' they are technically only for senior issues BUT they can likely give you the names of resources for non senior situations like this (awesome people the ombudsman). they may tell you about things like 'in home care' which provides subsidized or free caregiving on a daily basis.
for yourself-you MUST see a doctor and get evaluated. it is not child abandonment or elder abuse if you leave your husband alone for a couple of hours to go to a doctor's appointment. you are not his legal guardian so it's not neglect either. his medical providers have currently deemed him capable of being in the home w/support. they've not said that he needs 24 hour care or he would be in skilled nursing-so call your doctor's office and tell them you need an appointment ASAP. self medicating is never a good idea (and alcohol is a depressive so using it w/potentially preexisting depression just compounds the problem).
choices-your dad, your husband's family, the lawyers......none of them are living (or more so just existing) in the situation you are in. they can have their opinions but you know what they say about opinions (would quote but it's not dis friendly). you need to take care of yourself first and foremost-even in the best case scenario if your husband made a complete turnaround about appropriately addressing his circumstances, in your current mental and physical state you are not capable of providing him the support he would still need unless and until you address your own circumstances.
take care-there's help out there, ask for it and if that doesn't work DEMAND it.