Troy isn't the main SL developer, he is one of two main developers. SL's original developer is still there, and it's pretty likely Fermilab will find a potential replacement for Troy from their pool of Linux talent.
Okay, I'm just fed up with this anti-American nonsense. First of all, the Linux kernel wasn't a revolution, just a copy of a 30 year old technology that evolved IN THE UNITED STATES at M.I.T. and Bell Labs. Andrew Tanenbaum, the guy whose Unix variant Minux inspired Linus to write Linux, is an American, born and educated in the U.S.A. Just give it a rest. I know all you U.S.-haters just can't stand to admit anything good comes from America, but your racist denial doesn't eliminate the reality.