Hi Gonzobrian,
You can do 2 things.
1- you could change the exit key of Atomic to another key. (it will avoid the problem of the double typing on escape) And if you define a key you can not access with your cab controls , the exit will be disabled.
2- You can active the password asking on Exit.
(On the "options" tab, check "Ask for password on exiting front end". then click on the Define button. (you can enter a password using only your cab controls ,ex: left left right).
If you choose this option, when you press ESC on the FE, it will prompt you a password before exit. If you enter a wrong one or after few second if you enter nothing it will go back to the FE.
hope it helps.