There is a big thread on the BC Reference Case on Polygamy and Group Marriages
which followed the Bountiful case and the CPAA
participation on behave of the polyamorist community. It includes some items post analysis on the judgement.
I'm also currently one of the directors with the CPAA, so please PM me with some more details and contact information, and the lawyer from bountiful you've been talking too, and I'll see who we can talk to about this.
Also, I can hook you up with the poly community in Calgary if you aren't already for some more IRL type moral support.