The member of staff adopts a protective stance as the perpetrator grasps the member of staff’s lower arm with two hands. The member of staff clenches the fist of the held arm and shortens this arm by bending it at the elbow as far as the perpetrator permits. The member of staff reaches forward with their free hand and grasps the clenched fist of the held arm. The member of staff pulls the held arm against the perpetrator’sthumb to affect a release.