Hi Sieg, how is the climate over where you live? Most times, the extreme ends of temperature and humidity tend to cause the cards to warp. Since they were warped out of the dry cabinet, I suggest you keep the deck under a stack of books out in the open (living room or kitchen) to see if some moisture will restore the deck to its original state.
If all else fails, its time to move on. You either got a bad deck, or the deck has been condemned by the weather.