First and foremost: i am so sorry to hear you had to go thorugh this!
My family had bags stolen once when they visited the graveyard and left items in the car - i cant even begin to describe the trauma, but the bags were found six months later in the bushes of some kids playground. dogpoo on them, rained on, mouldy. needless to say they were chucked.
I think u were "lucky" with ur clean water tank. I wouldnt go as far as the others here, im sure nobody had the time to step on the bag or try to ruin it, they were looking for money end had no idea about the value of the bag - whilst tryng to be quick and get rid of it they hid it in the easiest place possible - the water tank
just think about it: if u want to go through a bag in peace and quiet, u need to look urself up in a toilet cubicle. and if u want to appear like ur doing nothing wrong, u obviously cant go back out leaving an emptied bag behind. I mean isnt that what they always show in all the hollywood movies? so what im trying to say: im almost certain nothing else bad happened to ur bag, it was just evidence that needed to be hidden.
TO EVERYONE commenting ewwww: really? dont make the poor OP feel worse! also: did u not know that the average smartphone screen has MORE Germs than any public toilet? think about where u put ur phone down during a week and how often u touch it - without washing the phone. u put your smartphone in ur chanels, dont u? Car and House key chains have been tested in various hygiene tests and along with wallets contained a ****load of viruses and germs - whichis why I actually use desinfection spray on my smarrphone, my wallet and my keys from time to time. with that being sad, My point is the bag can defo be restored, no need to freak the thread starter out.
There is a special antibacterial treatment for bags btw if they got mouldy due to wrong storage or water damage. I saw ho after hurricane katrina, chanel and hermes offered to restore peoples bags... I am sure you could ask a professional bag spa for an antibacterial treatment, if u wanted to. you could still follow that with a spa or colour treatment..
ur bag will be fine!! so glad you at least go it BACK.