From: Rabbi Moshe Isserles
To: Unknown recipient
The Rema argues that communal peace is a value so supreme that it permits—and perhaps necessitates—the use of "necessary untruths" or even disparaging speech to quell a devastating conflict. Drawing a bold analogy from the Sotah ritual, he contends that if G-d allows His own Holy Name to be erased for the sake of domestic harmony, a leader may similarly "erase" the truth to protect the collective from self-destruction. This radical prioritization of social stability over absolute veracity is precisely what led later authorities to question whether the Rema could have truly authored such a controversial stance.
Source: Shu"t Rema §11