Sometimes there's a file manager included in the OS; otherwise, download Cabinet or Root Explorer or the like. Then you'll find it in your downloads folder, assumedly.
Things you need:
Backing Up
Restoring
If someone decides to upload all the files, all you'd need to do is add a step about downloading that pack of files and placing those in the directories as per the "Restoring" section.
This was one I used for a bit, it worked well, until I got Root Explorer which has one built in. Also, if you have Dropbox, it has one built in as well. You could just drop the text files in your DB, let them sync, them view them on your phone.
Have you tried deleting them from the recovery? That is normally much more reliable than using an app (assuming you are talking about the app ROM Manager and not your recovery).
If that doesn't work you can delete the backups with a file manager such as Root Browser or Root Explorer
CWM backups >/data/media/clockworkmod/backup
TWRP backups >/data/media/twrp/
I can't speak for other carriers, but the Sprint S3's shutter sound was set to always be audible, no matter if the phone was on vibrate or mute. I don't take creepy stalker photos, but I do occasionally take photos at times or places where it's disruptive to have that sound going off.
If you plan to do the same thing, here are the steps:
Root Explorer is considered an excellent file manager, especially when rooted. They do have a non-rooted version too. I use it in combination with ESFile Explorer.
Root Explorer has been my favorite since switching to ICS. It's highly functional and doesn't look like candy.
Have you tried installing a file system explorer application on the tablet? Maybe Root Explorer? I'm not positive but some quick reading suggests to me that it is compatible with the Galaxy tab.
If you can get this installed and running, it has search functionality that I've used in the past to find some random treasure on my android phone. Maybe you could sail your way around your tablet and unearth your booty.