Thanks for chiming in!
The main point of this topic is to determine if we are any closer to seeing a release of the full band rehearsal of "The Bells of San Salvador." As far as I know, it remains unavailable.
The five segments I cite at the end of my post all relate to this song. I did indeed see the Brucebase comment, but my analysis identifies more than just "11. Untitled Riff."
I'm not sure what you are hearing in "13. Wages of Sin #3" as Bruce does not sing any words that I can make out.
Bruce Springsteen Wages of Sin #3 harmonies
In fact, this piece seems to represent his idea for the bridge or solo intended to be a part of "The Bells of San Salvador." If I can hear the full band demo, that might help support my suggestion.