Reply To: What if the Witnesses Don’t Want to Kill Him?

Although not directly on point, as I don’t believe that the Gemora deals with the question of recalcitrant witnesses directly, the Gemora does say in Sanhedrin 46a right before the mishna, that Beis din can give malkus and onshin including death, when necessary. One case was a guy who was riding a horse on Shabbos (d’Rabbonon) and another case was PDA (public display of affection)