Aimfred,
I was in the same situation as you and was able to have mine replaced. This was just before they stopped selling them though - so I started the process at the booth in front of MK where they were selling them.
One problem you might encounter though - according to their records, my ex-DH was the one who bought the brick. And they gave me a very a hard time about changing it. The first year of selling the bricks, they took all the paperwork, sent it out to be put on microfilm. Well, the microfilm was unreadable and they had already trashed the hard copies!
I was the one who bought the brick. I was a CM and got my discount - so I HAD to be the one to purchase it! After going round and round with them, they let me replace it - telling me that my DH had every right to replace my brick down the road if he tried to do it. Ugh!
Good Luck!
Kristi