Hey Guyzo,
I just did the Great Red Book in RR and saw the initials at the 1st belay station bolts. I was curious so I did a little Googling and found out the story on Mountain Project. I'm still not 100% clear on how it happened. There's still speculations regarding that incident. The illustration from Scott on SP, however, is clear to me.
There are now two bolts at the very top of the 2nd pitch along with some webbing but no rap rings. I wonder if these bolts were there at the time.