http://dl.dropbox.com/u/17646400/miuicamera.zip there you go will work with any recovery, also you dont neccassarily need to back up your current camera as this wont overwrite it so if youd like you can just leave it. This is from the most recent miui I havent tested it but i have used ones from previous versions so if you run into any issues let me know and I will test some from earlier versions and get another one posted just dont have time right now. Oh and i dont think you would just be able to copy it over and install it without atleast signing it, and Im not sure that would even work. Also if you have something like 7zip on your computer you could open this zip and add or delete any apps then just back out of it and you would have a new zip that you could flash.
Darn, it just force closes as soon as I open it. I am running liquid 1.8