There isn’t much Walker and the AG can do. Courts overturn the votes of the people anyway - just like they did in CA. You are being cynical for no reason at all. What do you expect them to do? Spend hundreds of thousands of tax-payer dollars to go to court and have the ban overruled by a liberal judge?
All Walker have to do is state that Wisconsin will not comply with any federal judge’s ruling striking down the state’s constitution amendment defining and upholding marriage in his state (There is no gay marriage “ban,” stop being a tool of the Left). No millions of dollars or lawsuits needed.