Single-user mode
- Reboot
- At the GRUB prompt, hit e for edit
- Arrow down to the kernel$ line
- Hit e to edit
- Append -s to the end of the line and hit enter
- Hit b to start booting
- When prompted, type in the root password
- vi /etc/user_attr and remove all profiles except Primary Administrator from my account
- save the file, exit to the prompt, hit ctrl-D to exit single-user mode