Later comments say that the Ninth Circuit pointed out that California law gives same-sex couples all benefits "manually", so denial use of the legal term "marriage" seems intended to offend or injure. This argument would not mean that other states could not outlaw same-sex marriage if they also outlawed civil unions (like Virginia Marshall-Newman) so there is a poison pill in the opinion.
Same sex marriages, at such, will not start until the appeal before the Supreme Court is carried out. (I suppos there could be an en banc appeal first.)
Wikipedia attribution link for 9th Circuit building.