in case it might help to see some images of that process:this is too complicated I dunno what im doing
in the first image, you would press the E key (for edit). the second image is what shows up after that. i just added a 3 at the end of the linux line after "quiet splash" so it became "quiet splash 3" (without the quotes). then i hit Ctrl+X to boot. after that i typed in my user name, hit enter, typed my password and hit enter. then i was in a text console where you could attempt to remove that xorg conf file.