20/03/20 at about 6:20hrs Driller had raised one full joint to break out and lay the joint down with the power swivel. In the process of breaking the joint out, the connection was not moving, so the Driller, while watching the power swivel control and torque gauges, applied additional torque, not noticing the reaction of the swivel. The power swivel reacting to the torque exceeded the torque rein set up holding capacity and started to counter turn. During the process that lasted for only a few seconds, the swivel body rotated about 1 complete turn, wrapping up of the lines and hoses.