Wireless Guest User not expire the session after the user is removed from WLC when you create it specifying in the SSID any WLAN. I note that user maintain the connection after the system remove the user create. in the cliente summary the user session still logged. Actual Version WLC 8.0. If I create user specifying the SSID name that system work how expected. After system remove the user the session of the system is retired and connection dropped.