As I wrote, my research is continuing. Although I didn't witness the incident, we have the word of several climbers that the rope was severed completely with a loud pop when the climber fell. I do have the draw, but we have not been able to get a look at the rope. If anyone knows John Gold (works at Miguels) please encourage him to contact us and let us look at his rope, which was the one that was severed. We have been trying to no avail to talk to him. We were told by the climber who fell that this rope was relatively new with only a few climbs on it.
Until all the facts are on the table, we cannot be 100% certain what actually happened. But, to the best of our knowledge, the probability is high that this event did take place as described. And so the responsible action is to post an alert. There are still draws up on Tape Worm and other climbs in Muir that are significantly worn.
We cannot change the cards we are dealt, just how we play the hand. - Randy Pausch
None are so old as those who have outlived enthusiasm. - Henry David Thoreau