SCOTUS are cowards!
The photographer should have taken the job, charged four times the going rate and donated the proceeds to anti gay marriage groups.
A win/win
I would post a sign in my shop saying if I am forced to do so, my policy will be that my proceeds will be donated to such groups.
No more worries.
According to the ruling you would be within your rights to publish a disclaimer saying anything you wish. You could have one that says you personally hate gays and wish God would strike them down. But because of the law you are compelled to offer your services. All funds derived from gays will immediately be donated to Focus on the Family in their name.