It's years since I did Hector, we skinned up roped up then followed our tracks down unroped after going to the summit. Real shame to see another individual die in a crevasse fall. Was the weather crappy that day? If so, that might be a reason to keep the rope on as you ski down. My recollection is that it isn't very steep so pretty easy to ski roped up. I remember some big obvious slots along the way that were easy to avoid.