UPDATE:
So AW's brother (and sister-in-law) have agreed to bring DS back to St. Louis *permanently* when they come through town in early November. I'm content to leave it at that (while seeking legal advice from another lawyer on dealing with AW post-rehab and living in "sober living" facility).
This has given me time to check out several different daycare providers and find the one that fits DS's needs, my work needs, and the budget.
As for letting my clients and practice go and mopping floors, doing dishes, etc. - there is something called "voluntary underemployment" in family law should this proceed to a full blown divorce (probable). Essentially the court can say, we don't care what you are currently making because you're underemployed -- you were making "x" practicing law and now you're making "y" mopping floors. I, the court, am going to impute income of "x" to you -- even though you're currently only making "y." And that is no place to be.
MCE Saint.