I think i've seen some stand-alone elements of project m, before they are all compiled into an official release, however, I can't find the file you're looking for. I have however, found a lucario PSA hack that appears to be an "improvement" over the Project M PSA.
http://forums.kc-mm.com/Gallery/BrawlView.php?ByUserID=19869&Moderated=AllIf that doesn't work for you, I guess you'll have to download Project M again, which may take a while depending on your download speed. Next time make backups before replacing files.