This is old news, hence the August 4th date on the linked article. I think the consensus is that Casacius Bitcoins are not really intended to be used as a secure method of storing bitcoin. They are more of a "cool" novelty-type item.

Apparently, changes have been made to the process to make them more secure. Do a search and you will find more on the topic. Again, I don't think Casacius was ever intended to be used as a secure storage method.