In the case of our forgetful user (yes, he forgot the radio ON this morning as also), I change the SIP password on the RADIO RRC, and make a restart. I have no access to his control RRC.
When I change the SIP password, he will get disconnected, but I have still problems to control the radio.
To me it seams that the control ports are still trying to access from his RRC.
I cannot test if my ideas a true in my setup remotely. Need to monitor with wireshark.
A possible solution could be to swap the ports completely, or get access to his RRC to kick him out.
//Gunnar SM3SGP @ SK3W