HouseBoy, yeah, Waddy was along for the '78 shows, but it's a different band on Stand in the Fire, which was recorded in 1980, I think. Zevon introduces the band, lustily, on the record. They're guys I haven't heard of otherwise; David Landau plays the leads, I believe. But what a hot band!
I believe Waddy was also in the Everly Brothers touring band that Zevon was a part of--as musical director?--in the early 70s. And they play as a duo for at least one show which is available at the Internet Archive, a really great short show: [
www.archive.org]
the Chestnut Cabaret show I have is from Oct. 9, 1984. It might be a little later than the one you were at--no "BTMMR." However, 2 shows also in the archive have that song. I have the one from the Old Waldorf, SF--it's excellent.