Complex sentence: The Knids change into living segments of a towing line, with which they intend to drag the two spacecrafts away, while the bruised Knid wraps his body around the Elevator to provide an anchor for this operation.
Split into simpler sentences: The Knids change into living segments of a towing line, with which they intend to drag the spacecrafts away. The bruised Knid wraps his body around the Elevator, providing an anchor for this operation.