Just have the local Sheriff(s) choose not to enforce it. That’s what 0bama does.
Fight back or lose.
Any fight other than a constitutional amendment are a waste of time. Windsor made DOMAs, state or federal, entirely legally indefensible. The cleverness of the crossover voters for Windsor and against standing on Perry was that unlike Roe v Wade’s all at once Supreme Court dictat, this will diffuse decisions across dozens of local courts. There’s a fair chance the Supreme Court will never have to rule because decisions will all be against DOMAs at US Courts of Appeals and they can just refuse the losers’ cert petitions every time. Probably the only way to force it to SCOTUS is to manage a decision to an elected State Supreme Court which may feel it has no choice but to ignore Windsor and its progeny.