Need your help to exchange torn screw without removing the head.

Hello your Saab pros, I have unfortunately had to find out today that the screw is torn off. Seen from the front this is the right upper screws. Somehow I have the impression that always this screw prefers to leave. How do I get the rest out of my head now without having to take the cylinder head down again? It would be optimal if as little as possible has to be dismantled. Who can give me tips for this?