OK. So, I was in the extension manager console and accidentally enabled the rockettheme installer. Now, I have a crashed website and no way to disable that installer to get it back. Please help.
Solved. I FTP'ed the installer.php file over to my desktop. I erased the die; command. I overwrote the old installer.php file, disabled the plugin, and then replaced the new installer.php file with the old one. It's back in order now.