Ctrl-Alt-Delete enabled after reboot

How would I be able to get SecureLockdown disabled when accidently forgot to uncheck it in the program after reboot?

Are you able to log into the locked down account? If so, you can invoke the Secure Lockdown utility and disable it.

All Keys have been locked down from programs so not able to even do anything. Program locked keys to get to login

You'll need to use recovery media or reinstall the operating system at this point.