Ok its officail Sony and Zipper have finally implemented a way for you to change or retrieve a lost password. Just got
http://Sony.scea.com and enter in the name you lost the password for then click lost my password. You will be prompted to answer your secret question.
They will email you a temporary password for you to login with. Once logged in goto edit my account and change your password. I dont know if you need to hit update profile, but I would anyway. You should get a confirmation email saying your password was updated.
I was able to login to Socom 3, which I have not been able to do for months with that name.