The "techies" should submit a report, in writing, outlining the implications of a decision. No matter how much people hate writing reports, it does have a degree of accountability that casual consultations do not have. The writer is more inclined to provide both the benefits and the drawbacks of the decision as well as providing the rationale for approving or rejecting the decision. Documentation also forces accountability on senior management, since they have information upon which to base their decision. This is information that they have to take to their bosses if called upon.
This is not to say that the techies will agree with the outcome, but it can soften the blow. I have certainly written proposals for things that I did not approve of, but it was better than their alternative. (That original plans would have resulted in my resignation since they were planning to do something illegal. The alternative accepted their goals, but brought them in line with the law.))