https://www.youtube.com/watch?v=FDFK704DLDYI found this clip about a year ago on youtube. I think the song was improvised out of the blue onstage in tribute to edge's birthday.
some interesting stuff here, edge's guitar in particular which lies somewhere in between 'wake up dead man' and 'love comes tumbling'.
I think there was something of a good song in there somewhere, pity it was never developed.
although the piece is still a million miles away from being a completed song, it still gets multi-plays on my ipod these days.