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