You can probably imagine a large number of variations on this attack. The bottom line is: vandalism may pay off, and may become part of the monetization game in crimeware, simply because it makes it harder to follow the trail of money. This changes a lot. Today, most security researchers assume a rational adversary, and design security mechanisms based on that assumption. But vandalism is not traditionally seen as rational, and is therefore often overlooked -- simply because it is so much harder to deal with.
It is time for us to start thinking about what new monetization techniques criminals may use, and what possible trends in society may affect our bottom-line security -- see my recent post Free iPhones ... then what? for another example of such a connection. And it is time for us to review our existing systems to see what could cause difficulties, and fix those that do.