So I spent some time with Howard (AP) and this is a mystery at this point. For the record the mount lost serial COM at 07:04:26 long past time ACP should have initiated the shutdown script. The camera is the only USB connection and that's using the Guider Relays to guide with so not interfering with the mount connection. I was able to park the mount which closed the roof although the telescope position never updated in ACP as seen in the screen capture. I manually warmed the camera using MaxIm and then disconnected to keep it from continually running. ACP can't do anything at this point w/telescope or camera. Rotator and Weather tabs are active or at least show options whereas telescope and camera aren't. So there's still something in ACP hanging I think.