Ok so I got Exjam's lua decompiler and compiled it and then I couldn't figure out why it wasn't working cause it wouldn't decompile my .luc file I finally figured it out and decided to make a user friendly bat file with the compiled decompiler (some people may not have C++ to compile it with).
Just rename your compiled lua file (probably has the .luc extension) to lua.lua and run "Run This.bat". It will automatically detect if you have a file name lua.lua in the same folder as it and when it's done it'll open the file for you.
Mainly I just did this cause I was bored, lol.
EDIT: I'm just going to put the bat file up until I ask Exjam if I can upload it.
You can get the actual decompiler's source here: http://exjam.co.uk/wp-content/uploads/2009/04/luadecompiler.zip
Just build it in Visual C++ Express 2008 (it's free), you shouldn't get any errors but you might get a warning or 2 but that's ok.