Well what I feared came out to be true.
Duncan's player had a fairly bad health and had a stroke a while ago, which caused the eyes problem we had talked about on the forums.
Without an email from him, and while mentioning him around, a phonecall to his city confirmed the fact that indeed, PGM died :/
He must have been very ill until then since it happened about a month ago, but he hadn't given news before.
All of my sads as a friend and as a ST.