The scientists and engineers at JAXA ISAS branch came up with a novel landing scheme that uses cylindrical body as part of the landing leg structure, by strateg

The scientists and engineers at JAXA ISAS branch came up with a novel landing scheme that uses cylindrical body as part of the landing leg structure, by strategically tripping over and settle sideways. This method saves significant amount of weight according to them. In that sense, the probe on its head up in the sand is only sideways, not upside down. In the sense that the probe is oriented the way it supposed to while on the rocket(it's sitting on the edge of PAF attachment plane and two forward legs), it's right side up. Nevertheless, IMO, "upside down" is a close-enough description of the situation.