Quote Originally Posted by Cookie Monster View Post
If you deactivate it in your console, you won't be able to play the games, it's more interesting to deactivate it in the other consoles

http://www.sonyentertainmentnetwork.com/home/

They changed the site, can't give you a direct link, you'll have to log in using your account details.
Thanks Cookie, I found out what to do but apparently I've already deactivated something so they're not allowing me to do it anymore. :/