And here I was trying to make sense of _move.path, and all proud that I had figured out what I needed. I was trying to figure out which direction the pathfinder was taking my creep when doing moveTo(x,y,"");
Just in case anyone else was looking, here's a quick snippet.
creep.moveTo(new RoomPosition(5, 19, creep.room.name)); console.log(JSON.stringify(Room.deserializePath(creep.memory._move.path)));