[all variants] HELP - Password not accepted at login - just removed libpam-krb what do I do?

view story

http://ubuntuforums.org – So I can't login. I had tried to setup kerberos authentication to log into some ADS thing at my new university, however that didn't work and resulted in me having to enter my password twice for everything. So I did: sudo apt-get remove libpam-krb5 Then some authentication tool came up asking if I wanted to ignore local changes(?) to which I entered yes. Then I restarted, now this! I tried to do recovery mode and enter into the root prompt, but apparently i is in read-only mode. Please help, my soon to be due PhD thesis corrections are on that computer! (Hardware)