* Hadfael tries to make sense reformulating things.
There is no need for such methods.
And in computer controled world the dungeon master is the computer. A fool coming in the middle of your conversation is something that can happen. Your characters are not on a stage. They did not put "forbidden entrance" nor "stage door" signs. They must be ready to see foreigners passing by at any time.
If they are coming in the middle of the third-act of your play, improvise.
There is no ready made reciepe. As a player you have to adapt you plans to the events. As a character, whatever happens is reality.
What you consider "godmodder" as a player, exists for your character. He is free do think that the other is a fool living in a fantasy land, a night-time reveller, a feverish man. How your char decides to deal with such guys depends on him, his mood, ...A healer can try to cure him, a fighter to challenge him, etc.
Whatever the nuisance is, it's part of the world.
Blades are real, village fools are real, thieves, murderers, trips to the DR, Harnquist's predictable life.
Claiming that your RP is better than the one of others is contradictory if you don't accept the world as it is. This thread is about how to godmod when dealing with a godmodder.
Role play is to adapt to the situation. It's not following your self-made scenario. Get the difference between being IC and acting and you will make a huge step in the right direction.