Answer:
Radial balance is created by the central spiral. It radiates from the centre of the composition and its visual weight is evenly spread.
Imbalance is created by the position and pose of the figures. The eye is drawn upwards from the centre of the spiral along the male figure's legs, up and to the right by the angle of his torso and then further to the right along the female figure to her head and hand. The shape of the spiral behind them also draws the eye in this direction.
This central, imbalanced image creates a sense of tension and unease that reflects the mood and themes of the film.
