It's the Backshell/Parachute, which is about 300m away and in the right direction. But don't let that spoil your fun. Tin Foil Hat Brigade,
Chaaaarrge!!!
Photo of lander(5.5m span across solar arrays), heatshield (200m away) and backshell/parachute (350m away)
www.nasa.gov...
Photo Mosaic from lander - anomaly is at lower right distance)
www.nasa.gov...