A sledge hammer approach may be something like Gefen\'s DVI detective . I have not personally tried it myself but I was recommended this when I was having HDCP errors with my G98 and display. It basically allows you to unplug a display and the 'detective' will mimic the display still being present. Putting it between the HD-DVD and the HDMax would hopefully sort your problem.

Meridian owner since 1992
Prime & PSU, Focal Elear headphones, Roon (ROCK 8Gi5 NUC), Explorer 1 & 2, F80. 200/203, various Sonos (via Roon).