Its all down to route choice in the end. Various teams I spoke to today were all slightly agast at the scene below. Now they may have had some divine information as to the stability above, but I rather suspect not. Hopefully they survived, but if they did, it would be down to a lot of luck and not good route choice.
It is often said that "Buttresses are a safer option" The team below have certainly taken this to heart! See if you can spot them