Not that I want to play party pooper and dampen anyone's spirits but if I remember correctly (which I always don't because I am all over the place) he may just be powering down because of the upcoming hardfolk just like Stinc or Steem (however you want to address Ned's people) I think did a power down when there was talk of hardfolking them out or something to that effect. It may just be a safety precaution he's taking.