If you're willing to cheat you can use this to get the enchantment:
player.additem 10df26 1
Should give you a 'Necklace of Peerless Smithing' which you can then disenchant.
There clearly is a fine line between powerful weaponry and weaponry that is too powerful. What kind of damage was your item dolling out? Also, did you need to start a new game... i.e. did the mod make it so that any weapon would shell out that kind of carnage. Because if it did, then I would like to know the name of that mod just to insure that I avoid it at all costs.
I used a mod for sh*ts and Giggles for that one. I enchanted my armor using some wierd spell and when I activate the armor in my house it blew everything that wasn't nailed down all over my house!! Always save your games and note it down on notepad file which one it is before playing around with mods. I used this mod for like an hour just to see how bad *ass it was. My armor value was over 10k and I believe the daedric sword I had was around 1142 of damage. I ws a walking tank and it quickly got very boring. When you get that powerfull you lose all the kill animations which really s*cks. And I started a new game because I beat it as a nord, wanted to try someone else, not becasue of the mod. Just remember to save before you mod.
[Edited by Gamejunky, 2/13/2012 7:32:22 AM]