[S2] How to override an interceptor in the default stack?

[Burton Rhodes]

I would like to override/extend the existing "exception" interceptor in the
default stack to log a few more items when an exception occurs.  However,
all the solutions I have found require you to redfine the default stack.
 (See Final Thoughts on this page:
http://markjgreene.wordpress.com/2009/01/05/struts-2-exception-handling-w-hibernate/).
 Is there anyway to simply override an intercetor or is the described
solution the correct method?