RESTful Password Resetting

I'm using the restful_authentication plugin at the moment, and need to
add support for resetting forgotten passwords. There's plenty of good
code snippets here,

http://technoweenie.stikipad.com/plugins/show/Password+Resetting

I'm just wondering, mostly as an exercise, how to RESTfully model the
password resetting. Perhaps a "Password" singleton resource hanging
off the User? Maybe it's a little more trouble than it's worth. Any
other approaches?