I started the Android app, and I went to the second login option ("Log in using another OpenId") and entered my google account credentials. Authorized the app, and got to the feed.
Then, I logged out.
I wanted to try to log-in again using another set of openid credentials (to show the app to my coworker). So I choose again "Log in using another OpenId" but... it automatically logged me in using the google account credentials I entered the first time.
I find this behavior.. strange! How can I login with another set of openid credentials? (without erasing the application data from the Android application settings?)