I am not sure about the Director but I think your issue may be related to this.
There are two passwords for AMT one is local password you use through bios and the other remote password over network for webUI or ISV console. The issue is once the local password is changed from default "admin" to any other password then you will not be able to change this password remotely. The only way I know is to be able to change again locally. However, you can change the remote password remotely using any tool like webui or any ISV console. This is by design and we are requesting a change to be able to change the local password throgh SCS server once it has been changed from default "admin" . I could not tell you if our request will be accepted. Hope this helps!