Logout and Re-Login as

I noticed there are plenty of options for logging in from username/password to Facebook, Google and others.

If I login with one method, then logout.
How can I login again with a different method?

Do I have to wait until the session expires?

Sorry for the delay.

When you access again it tells you something like this:

If you are not "Matt", please click here .

just click on the link to logout permanently.

This is works this way because you have logged out from PHP Classes but did not yet logout from Icontem Accounts (the single sign on site).

Clicking on that link you will logout permanently until you login again.

I have put on the site to do list to improve that message to also mention that you can logout permanently this way.

Just follow up here if you have a better suggestion.