Maybe Mark (or someone) could figure a way to get the software watchdog support in the kernel to cut off the remote amp line, or, hell, go ahead and reboot like it's designed to do in the first place.

Of course, I don't know exactly what's happened when the player won't shut down, so it's easily possible that a software watchdog would provide a false negative.

Can you not do a Hijack reboot in these instances?