There is normally a small hold to push a paper clip into that will eject a stuck disc, but checking my F80, which I assume has a similar mechanism to the G92, I can't see this hole. That said, I am pretty sure I once had a stuck disc and did manage to eject - think it may have been the metal lugs but I would not want to risk it.

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