They could be subpoenaed into a house select committee to undergo questioning explaining their actions . It would at least be a bold move and have them try and explain their reasoning to an equal institution under the republic?
There is no magic bullet, but you need to return some heat or else go under without a fight. It would also completely unhinge the conservative forces hell bent on a dictatorship.
What exactly is the risk when considering the very real danger the court is doing to the country? Tolerating intolerance will only take the country in one direction.