The step mentioned in the blog does not reset the master password .
There is no information in SSO database except identity source urls and other customizations that you might have done on SSO admin account .
If you uninstall SSO and re-create SSO database and start fresh then you would have to re-register vcenter , inventory service and webclient back to the new installation and the steps are available in kB http://kb.vmware.com/kb/2033620