Couple of words from Europe...(I'm new on this forum but have been 'lurking' for a while)
I have a snowboarder friend (a really really good one, e.g. 2nd on verbier Xtreme 2001)who told about guys doing pretty progressive stuff on skis on the early 90's.
I guess great things just often happen to be 'invented' at the same time, in many places and by many people. It is the same with snowboarding, no one can say exactly who invented the idea, because there were many people who have the similar idea at the same time. This is very comparable to the 'new school' skiing also.
This boarder friend of mine tells that he had 'ordinary ski bum friends' in Chamonix that were doing rail slides on frozen logs, grabs (mostly rockets and mutes), and taking off fakie from cat tracks back in 1993-96. I myself heard one of these guys talkin about doing a swirch 540 off cat track back in -96..(I'm not sure if he ever did it though..
I know that those same guys (I'm talkin about) are nowadays more oriented to big mountain skiing, even mountaineering and (real) extreme skiing (hate the word, but you know really scary stuff like Aguille du Midi Nort Faces and such..) But still, the point is, I'm pretty sure that no one alone 'invented' anything but this all started by several individuals around the ski world that just started to play with new stuff and got fresh ideas from snowboarding..
OK, just my 2cents...really interesting discussion by the way!Keep it up!