that's quite sad to hear. even though i never personally used the site (as i don't go for high score runs in the mainline games), this much data being potentially lost for good can only be an overall detriment for the community.
if there's no archiving effort being made at the moment, i can try putting together a script that scrapes replays off the site so that they may be preserved. if anyone's already archived them, or is in the process of doing so, they should probably post in this thread.