As people find deposits of precious metals and minerals today? The world doesn't end. Some people just get rich.
Furthermore, metals take up physical space. Please tell me where 100 times the current quantity of gold might suddenly appear, assuming, of course, that the world is running on gold as its currency.
Yeah gold is a poor analogy. Diamonds are better. So say one day I'm digging in my backyard one day and I find a watermelon sized perfect diamond worth fifty quadrillion dollars. What you're proposing is about as likely.
By the time bitcoins would appreciate in value to the point a flash drive could cause serious damage, such media would be well past it's expiration date. The data would be unrecoverable. Plus. I'm guessing whoever has a large amount of bitcoins today will probably spread them around a bit (if they don't, bitcoins won't be used and won't be worth much anyway).