Trial courts can't set precedents. Only appellate courts can.
Of course, they won't stop firing employees who point out inconvenient truths, they'll just be more careful about the reasons they put in writing.
But these words belie the fact that stare decisis is largely a social construct for the judiciary. The right case and (very) persuasive argument could and does overcome precedent of any level in any court. It's just a matter of framing this case as "different" enough in a way that your reviewers (whether a higher court or a political concern) will agree with.