Since you're running a dev's ROM like CleanRom, there shouldn't be an issue with OTAs. They have usually already taken care of it for you. Although I don't know the ins and outs of CleanRom, I expect it's already been handled.
Changing the apk to bak for the files in this thread is something for folks who have rooted but haven't installed a ROM. They're still running the stock ROM, so they're vulnerable to OTAs.
Changing the apk to bak for the files in this thread is something for folks who have rooted but haven't installed a ROM. They're still running the stock ROM, so they're vulnerable to OTAs.