Use these commands in wsadmin to remove a user or group's permission to connect to a local bus.
To prevent a user or group from connecting to a local bus, you must remove them from the Connector role for the appropriate local bus. Removing a user or group from this role prevents them from accessing local destinations, or sending messages to destinations on foreign buses.
$AdminTask removeUserFromBusConnectorRole {-bus busName -useruserName}
$AdminTask removeGroupFromBusConnectorRole {-bus busName -group groupName}
$AdminConfig save