I was part of the second rope team through hyperspace this day and built a safe 3 piece above this foot ledge by placing 2 pieces above and one below the detached flake. This worked for me the previous time on the route but I took time to really make sure that all pro was clear of the flake before bringing anyone up. If the rockfall was caused by the third rope team, then I was giving your leader beta and I thought I commented on the dangerous flake, but perhaps I didn't stress that enough. Sorry.
Im really glad no one was hurt!
Sincerely,
Jon Pobst