Heh, in the Molton Core Raid Instance, there's this boss that puts some type of curse on minions/pets that causes the pet to build up a certain amount of damage over a course of time, and then implode, it usually only lasts like 10 seconds and then does 200-300 damage to everyone in the area. But a bug makes it so if the Minion gets unsummoned the amount of damage keeps building. So he summoned his minion in the AH, and the accumulated damage finally went off.