I was just checking out a site. And I found a program that you can use to silence the camera, I'm only suggesting this one because there's another one that you have to actually pay for. This one is free. http://berrycoder.com/peekaboo.jad
Download it OTA, check the set permissions and allow the "Key Injection"
Sorry if this has been posted, I didn't see it anywhere.
Edit: I think I posted in the wrong section, if you want please move to aftermarket software, sorry I forgot there was such a section.