Oh, dear no, please! That is not a Christian response at all. Another Freeper suggested that the business people pray while they work, put Scripture verses on the cakes (although I suppse they could be sued for not giving them what they ordered), or something like that.
I think Christians have 2 choices. They can either refuse and suffer for their faith, which we are called to do. Or, they could contract the work out to people who do not object to homosexual “marriage”, and then donate any profit to a charity (perhaps one that helps homosexuals repent) or to a church.
Retaliating is not an option.
I made it quite clear that religious people would not do this.
If you were to read gay blogs, you would see that openly praying would just bring another law suit since they react like Dracula to garlic when confronted by prayer. Same with biblical scriptures on cakes.