It is the voters and not the courts who are ruling against Cruz. I say that as someone who supported Cruz from the day he announced. But, the reality is that we are probably facing a choice between Trump and Hillary. We need to accept that reality and do the right thing.
RE: The Constitution is very clear about who is to choose the president and it is not the judiciary.
Disqualifying a candidate because he does not meet a constitutional criteria does not mean that they are choosing a President.
It simply means they are determining a person’s eligibility, that’s all.
If he is ineligible because he does not meet the constitutional criteria, no amount of clamor from electors will make him President.
Similarly, if he is eligible but the electors do not want him, he does not get to be President either.