Okay, so since he targeted "randomly," then he should have died.
##Vote: Filch
ugh. Myrtle and Voldemort, seriously, why Filch over Snape? Yes, he probably should have died, which means he's LYING. I agree that there's a chance from this that Filch is also mafia, but Snape is the most likely one if it was Snape that lied.