Problem
So, I managed to lock myself out of my system by messing up /etc/inputrc. As soon as I logged in via ssh it would close the session. Anyway, I plugged a monitor into my server, rebooted into a live linux distro, mounted my drive and undid my (silly) changes to /etc/inputrc. Rebooted and the server went straight to the blank, blinking cursor screen (this is normal).
For the life of me I couldn't remember how to bring up the login...
Solution
CNTRL + ALT + F1
Seriously, took me forever to find that on the net (every page was all like... Ubuntu's login page is pretty, just enter your username + password... well on my server I don't have any fancy schmancy GUI installed).
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