I'm having a hard time seeing how this divorce/marriage shenanigans would alleviate any financial or custody issues. Pretty much all of the legal rights automatically conferred with marriage can be obtained through other means - powers of attorney (medical, legal, financial), medical directives, wills, etc. BTW, it's 2015, two people do not need to be married to finance a house together. Makes no sense.
These people are loony and unconventional, but I don't see any signs of abuse or neglect in any of the children that would warrant removal from the mother's home; mostly the kids seem to be settled and doing pretty well. If Robin's ex is using the polygamy (multiple wives/mothers) aspect to get the kids, a marriage certificate does not change the fact that they're still clearly living a polygamist lifestyle. Makes no sense.
I don't know much about the technicalities of financial aid or bankruptcy, so I can't speak to those but I gotta believe it would be hard for them to successfully scam the system (at this point) because so much of their lives are on TV. Any fraud would be pretty easily exposed.
Then there's the tweets, the wives' recent meltdowns/walk-offs, the terse PR statement. Hmmmm.
My guess is that Kodster will give a variation on the "On the run! We're being persecuted! They'll take our kids!!" BS spin. The truth will be quite different.