Dude,
I just found out that you could one shot Hardonox. The 2nd spider boss in Heroic Azjul-Nerub. We were doing the usual rounds, when we ran into Hardonox, but we didnt wait for him, we ran straight for him and our warrior threw his throwing axe and it one shotted him. I dont know if this is a bug, but its very nice.
These are the exact details on what I was doing:
Horde, Heroic Azjul Nerub. Second boss Hardonox, kill him right when he comes out when all the little spiders came out to battle him. You don't wait, just rush in and do some form of attack. And I think that will get rid of him in one hit. I don't know if this was a one in a time thing, but hey, test it out, and lemme see your results.
Thanks,
Alucard805 (first exploit btw)