I was installing the plymouth manager in hopes of making a custom loading screen. While the terminal was working, my computer unexpectedly powered off. I can open up the manager and it appears to do what it is supposed to (minus the fact that I can't make my own theme) and the screen only shows on powering down. Anyway, all of the advice I have seen so far have resulted in errors and nothing getting fixed. I do not have permissions to simply select the folder and delete it for some reason and I have not been able to find out how to grant myself those permissions.

I guess my question then is how do I get rid of the plymouth manager so I can reinstall it properly?

Already tried:

-Installation - http://www.noobslab.com/2011/11/install-plymouth-manager-and-change.html

-Removal - How to remove Plymouth Boot Animation manager and keep the default boot screen

-Permissions - How do I change my user permissions to edit /etc/apt/sources.list?

-Theming Guide - http://brej.org/blog/?p=158