Short of disconnecting power, any tricks to cleaning the glass top of a Pulse M?

I tried the “Vacation mode”, but even in that suspended state the control panel reacts to touches. (Probably because that’s the only way to resume normal mode.)

For now, I’ve removed all presets and I clean it while it’s not grouped with other players. That way at least it doesn’t start playing anything when I wipe the play button. But most times I still have to re-set the volume level afterwards.