My understanding is that it isn't the orientation of the lander so much as the fact that it is in shadow and therefore won't be able to recharge its batteries.
Deeming it a "massive failure" is, IMO way too harsh. People tend to forget how hostile space is, and for a craft to basically be asleep for 10 years and then still successfully complete the vast majority of it mission is really quite an accomplishment. If not for the harpoon malfunction, the mission would have been virtually flawless. They are to be commended for their navigation skills alone.
Deeming it a "massive failure" is, IMO way too harsh. People tend to forget how hostile space is, and for a craft to basically be asleep for 10 years and then still successfully complete the vast majority of it mission is really quite an accomplishment. If not for the harpoon malfunction, the mission would have been virtually flawless. They are to be commended for their navigation skills alone.