Wait. He thinks he remembers an incident report by Lahabrea about two Keywarder deaths. It had been tragic but since the situation had quickly been resolved it had passed through memory. As Emet-Selch, he had to oversee ALL of the underworld after all.

He remembers Lahabrea seeming changed somehow from the incident as well...

"My condolences. You needn't worry. Pandaemonium will manage without you for a little while."

He says this confidently because he doesn't recall any further disatrous accidents.