Man, I had something like this happen to me a couple of times at work. Just money being taken from me part, not the being held accountable for the money from my boss too. That would really suck and piss me off too. Plus, it was only like $5 or $20 each time it happened to me.
You should post the video of the person who did this when you catch 'em. I always love seeing people get caught red handed. I'll check in on the cam once in awhile and see if I see anyone being an ass. I think I saw you today while you were at your desk. You looked extremely happy to be there btw.
