Precisely. There's several copies of a prominent law professor's lecture on the subject and spells out PRECISELY why you don't do things like that.
Now, the burning question would be, "how did they get access to his encrypted system files?"- without a warrant, they're just as screwed in light of the recent Supreme Court rulings. You need a warrant for those things- and you need to state you're looking for a specific on them before they can legitimately reach the conclusion the Mass Supreme Court arrived at. Without that, it's just like the Fourth Amendment violation I experienced about 5 years ago. No *VALID* warrant? No case. No seizure allowed.