Ok, so if we suppose your smerging idea doesn't work, is an amendment necessary to protect traditional marriage? Or should that be left to the states?
Neither.
Ideally, all the courts have to do is acknowledge the truth of the matter -- that the word, 'marriage,' still means what it always has meant throughout history, across continents and cultures.
If the courts screw up, I would not take it lightly.
Beyond than, I sayeth no more.