There is actually one route, you may consider, however there are no guarantees. If Singapore is a member of WHO, they will after evaluate the effects of health on the partners and children involved. If it seen to be in violation of human rights, Singapore will end up penalised. One may well say Singapore do not care, but who am I to judge that.
Although it may cost money, or it may cost only reminder of the WHO rules on human rights and health. Until it is tried no one will know, although i doubt any legal authority in Singapore will get involved, one would have to write direct to the WHO, and ask them to appeal on your behalf, due to the inhumane suffering caused by separation of spouse and children, simply because of bureaucracy.
The effect on children mental health would be considered more than the separation of the spouse. Because suffering is a part of life and divorce only comes second to death, however not so for children, it's more damaging to separated from parents, mentally, which could cause permanent lasting damage. If an appeal was a chance, I would go direct to the top, Singapore better be prepared for a scolding, and very similar to the UK.
They are a law only to themselves, the UK never ever will listen to European law, and how many people have it in them to take it further. I know, one cannot find legal European advice or representation in UK to take them to the European Courts, because they would be blacklisted under British law.
However those that have fought tooth and nail, have found, that the British government comes to a settlement long before the Court case, because they know they will be severely punished financially. But in the long run, the government actually do save millions of pounds in welfare benefits, so it pays the government to not listen to Europe, so why not settle paying a few 100k for the one's that have the staying power to go the whole way to European court.
Of course it takes time, patience and a lot of stress, but i have seen the UK pay up on several occasions, rather than end up in the Court. For Countries who are members of the WHO, they have to abide by their rules on what constitutes health and human rights. Nothing is easy, when you are faced with defeat, but were there is will power there is a way! There is also a cost to pay, in terms of health and stress too.
It works both ways, and that is how it will be looked at, you are either accommadating or not. This is all a dipolmatic games nothing more or less, but if they have signed treaties, with Europe, and we do not know, then they will be scolded for their actions. 
Your lucky night is it 
I'm still wishing for my birthday present!
There is very little common sense in this world, only problems and personal injustices:roll: