pick up the hammer in your inventory and drop it on your person.
For more broken enchantments soul trap Vivec using Azura's star. The best way to work on this if you don't want to spend all of the arms and legs of everything you clean up would be to get Azura's Star from her quest (location upon request), and Summon Golden Saint (I want to say Tel Branor? Heh, turns out black spider is actually right though. However, for enchanting a weapon, you're always going to do more with a damage enchant than a constant effect enchant. Constant effect enchants are expensive as hell though through an enchanter. It will bring up a dialog box that will allow you to fix things. To create a constant-effect enchantment you must have a soul gem that contains a soul with an enchantment value greater than 400. One thing to balance Morrowind enchanting would be to merely get rid of constant effect enchantments.
However, with 110 enchantment skill you get 300 casts out of it.
