Bullshit. If the song was the 'greatest song he's ever heard' why would post asking for it on a gnr forum? Can't he contact his friends? The song was probably Paradise City anyway...?
He said (on GNRForum) that it wasn't PC and he has all the old GNR stuff and the leaked tracks.
He said it was a "friend of a friend" who had it, not his friends, maybe they can't get it? Convenient...
but I'd rank this rumor as "mildly interesting" if only because a) it's a title we've never heard before and b) the IRS cd did get out there (and took over a year to leak the one track that was aired).
Someone's got a source... be nice if they'd let something slip... i.e. one of the other tracks from that IRS disc.