The Mormon Church will - for the foreseeable future - be publicly opposed to polygamy. It has, for some time, been trying to convince Christians that it is a Christian group. Any attempt to aid polygamy will strip it of what acceptance it has received in regards to Christianity.
Glad you are posting again James. But yes if they haven't already been stripped of their "acceptance into Christianity" by swiss cheese theology then this will be it.
I certainly support the comments on their theology, but they are right now making strides in their attempt to be recognized as a legitimate Christian church - unfortunately. I think that, unless Protestant denominations should begin to be supportive of polygamy, the Mormons (or, rather, the "mainstream" LDS) won't support polygamy in the open, because they know it will obliterate any hope of acceptance as Christians, for at least the next few generations.