Word's flying around about a Void Reaver exploit that involved mind-controlling a Tempest-Smith, and then blasting the heck out of him with the bomb ability. One guild, as seen above, has brought VR down within a minute-- apparently the ability has no cooldown, so VR can come down as fast as your mind-controlling Priest can click. However, Blizzard has said this is an exploit, and it is not recommended that you do this on the live realms. Blizzard will definitely be watching VR raids-- avoid the banhammer!
But still, a fix has got to be incoming as fast as possible. The question is: how? The most obvious answer is that they have to simply make the Tempest-Smiths not be mind-controllable, but I'm not sure how it works-- in order for the groups to go down right, most raids will sheep or trap these guys, so they do have to still be vulnerable to some kind of CC. The other option is to put the bomb on a cooldown, but even then, that kind of DPS will still help the raid against VR.
At any rate, Blizzard will think of something, and probably sooner than later. Interesting exploit, but an exploit just the same, and a definite no-no.
[ via WoR ]