The hazards in a mysterious, quite intriguing excerpt from Aynsley Vandenbroucke’s “Full Circle” are more playful in nature. To live music by Leanne Darling, and in near total darkness, two women in white train flashlights on two others-making them jump-rope over beams, penning them in, spotlighting their squiggling feet before each gets her own lamp and tries in vain to pinpoint everyone else’s fast-moving steps.