Yeah, everything was already off the bike. The spring doesn't appear to be snapped, but it also doesn't seem to "catch" into place to reassemble it. I'll check the internets (thank you for that one link) and see what I can do to get it going again.
The front derailleur had already been replaced with a cheap Shimano, so I may just try to find a nice vintage-looking pair of derailleurs, like older 105, 600EX, RSX, etc., and call it a day.
