Getting mean at this point of the game would be a waste of time. What you need to do is just get real and smell the coffee so you can see the situation for what it is and deal with it.
I don't see why you're saying divorce is not an option. If you start dividing up expenses into "his" and "hers" categories, that's what the end result is going to be and sooner than you think.
Furthermore, from your story, there seems to be this 100 foot elephant in your living room that you are ignoring. You say dh makes good money (just not consistently) and you have a job, but somehow he has acrued all of this debt and because of it, you and your daughter are forced to endure living in less than ideal conditions and now **you** will have to get a second job to in effect pay his ex wife's child support and maybe to stave off losing your own house and credit?
I could be wrong, but I think there is more at issue concerning your situation than just an unfortunate stroke of luck and financial setbacks where your husband's employment is concerned. Would you be so quick to divide responsibilites where debt concerned if he didn't have entanglements and obligations to his ex? Because I think that's what the problem is here...not just plain old money problems.
This is an awkward and difficult predicament you're in. It sounds to me like deep down inside you're afraid because you know if you stay, you will be paying for his life's choices good and bad, financially and romantically.
I'm sure you already have done the homework and know that no matter how you "improve" your financial situation, short of him getting a secure job that pays enough to support you and his ex, YOU will be the one ultimately funding his ex's child support with a second job. It sounds like it might even be too late for you to save yourself and your daughter, and may have to just be prepared for the long haul, as the man's credit is shot to heck, and based on your information will soon be homeless, carless, and is barely able to keep consistent work.
No undue insult to him, but plain and simple, it sounds like he's the walking wounded and he' s in no position to support himself, let alone two families. I guess the question for you to consider is; are *you* okay with *that*? Are you okay with the reality of you ultimately becoming the supporter and executor of *all* of his financial problems and burdens?
Reality is, your credit could already be ruined, as well as his if your shared credit is delinquent. What plan other than a second job do you have in the works? Time might already be wasting or long past if you don't line up housing now, or look into filing bankruptcy now, you could be worrying about worse things than being able to pay back creditors...like homelessness. Not to mention, bad credit can affect future employment for the both of you.
I think you need to decide if you're in this marriage or not for the long-haul. If you don't have a problem with what your future realistically holds, then stop complaining and get this man's butt in with a credit counselor, and/or a bankruptcy attorney and the two of you come up with a realistic financial and employment plan. As for whether or not he can deliver to your specification...only time will tell. Right now, I think he's not up for the job...and might even need counseling as his life sounds like it's spinning out of control with no clear direction or purpose...and he's all to happy to suck you into his miserable vortex of woe.
If you're not up for being the solution to his "financial" problems (because realistically this is the only option in the scenario you have painted), then you might need to evaluate your relationship and situation as a whole to save yourself and your daughter...because the only thing you can change in this situation is you. Waiting for a man who has a track record of not being able to follow through with anything in any area of his life, is more than likely not going to change his stripes. You either accept him as is and deal with it, or get out before the stakes get too high.