What action can help break the subject's grip on a weapon?

The action that can help break a subject's grip on a weapon is rotating your body. This technique leverages body mechanics to create torque and strength in your movements. By rotating your body, you can apply force in a way that makes it harder for the assailant to maintain their grip. This method is effective because it utilizes the body’s core strength and can create an leverage advantage that may allow you to withdraw the weapon or otherwise neutralize the threat.

In contrast, shouting commands might have some psychological effect, but it does not physically assist in breaking the grip. Pulling the weapon harder could inadvertently strengthen the subject’s hold by increasing resistance, and waiting for backup does not address the immediate threat at hand. Engaging with a physical response like body rotation is the most effective action in this scenario.