Massive [Touch of Death]

Hey guys!
So.. I just found a thing while leveling in Corlain, Drustvar.

Was on some quest to kill 3 mini bosses and I used Touch of Death - Spell - World of Warcraft on them, just before [Touch of Death] expired (like 1.5 seconds before) I used "Witchrend" (Witchrend - Spell - World of Warcraft), which is a zone ability in Corlain.
Ended up wit [Touch of Death] critting for about 170-180k!
Tried twice, both times worked (first time I was like, wtf? So I tried again 2 min later on one of the elites, and with the same result)

I'm lvl 114 with 52k health, it should NOT do that amount of damage. But hey, the faster stuff dies, the more fun. Right?

Massive [Touch of Death] - Monk only