Haha totally false account by that article.
The BC Attorney General asked the supreme court to rule on polygamy being a charter right for Canadians, as they had tried to prosecute polygamists and failed. Both sides for and against are having their day or days in court so to say that pro-polygamy forces started that is completely and utterly false. I spend a lot of time in Canada as i live in the PNW so i do follow and know what is going down. From what i have read about this case, there is almost no chance of it being found legal.
To say this is because of gay marriage is not only false but ridiculous.
This is from a pretty liberal paper too and the angle they are taking is definitely against polygamy
http://www.vancouversun.com/life/polygamy+case+hears+tradition+monogamous+unions/4087160/story.html