What a ridiculous hypothetical strawman
You obviously have no idea who Schlafly is......what she has accomplished or how....
....or her strength of character
Maybe the motives are bad. Maybe the target is not worthy of being a target. You may think that Sanders and Trump are completely opposite (I don't). You may think that this was a terrible decision. That is all fine and you have the right to your opinion. But don't try and say that 1.) Cruz is responsible and 2.) It is unethical. Neither are true.