Ha, ha!  I like it!

But seriously, the normal course of action is to terminate sysadmins who are incapable of producing the proper credentials to the equipment they manage. "Termination" doesn't mean "killing", just "firing from employment 'for cause'".

There was an really interesting case of a network sysadmin for San Francisco municipial government that went insane (schizophrenia/paranoia) and refused to disclose passwords to the Cisco equipment which he was supervising. Sorry, I don't have a link handy.