Yes, you can switch to regular log anytime. We set a default password when you first login using Facebook and we use your primary Facebook email as your username. To receive your password, go to the login page and select the “Forgot Password” link. Enter your email and your password will be emailed to you.
To change the password to something you’ll remember, first login using Facebook, then use the toolbar to click on the right-most menu and select Membership Details.
Then click the “Change Password” button.