I’m puzzled by one thing, if risk management is the concern: why not replace that clause by a candid, confidential conversation on what is wrong with the company? Any significant issue most likely affects more than one employee, including remaining ones. It sounds typical of a culture driven by lawyers, rather than leaders.
Ah the notorious "exit interview"? Steer well well clear of them too! http://www.asktheheadhunter.com/haexit.htm
I've gotten some real painful, but incredibly meaningful, feedback from these interviews.