No...they nerfed RECKONING in Vanilla which was a paladin being attacked and dropping multiple hits in 1 melee from the "RECKONING BOMB" Windfury Weapon was like this til WOTLK, Sword spec was like this til the talent was removed completely. However in Cata the low level weapon enchant windsong or w/e could proc off Melee's from both hands, magic damage, and bleeds. I.e a Feral could keep it up insanely longer than its proc chance.
Now, the actual likelihood of it being way overkill like that is so low that it'd be probably talked up and front page everywhere if someone ever pulled even 15% of a bosses health in 1 button press, from procs of course, and current content w/o some crazy nuke mechanic, Dantillionax or w/e in BRH for example. However, these types of mechanics have always been fun for the user when you see the multiple hits, and in some cases left untouched or working as intended.
If it is in fact op, Im sure it will be nerfed, or if other classes aren't comparing properly it'll get hit. Which I never understood, personally a lot of cases people complain about 1 thing when they mean to say, "My class needs some attention" or even just "This build isn't right" so then what is seen as an "overperformer" is nerfed because its far less work to fix 1 thing, than tuned everything else to be more comparable.
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No sword spec was never actually nerfed it was more or less just removed w/ class changes. The effect of procs causing themself to proc again, has and will always be somewhere in the game and is intended. If it is actually overperforming it will be altered, however we don't have current raid parses or enough players of all classes w/ final traits.