No one is leading the thread off topic, I think you are failing to understand what is causing your HUD issues.
Some time ago (4.86?) it was announced that the Disco Mod would alter FL install files and switching the mod on and off would no longer return it to virgin.
But I'm glad you found a work-around, even if it is a somewhat lowered game experience.
Now, that cockpit disabling might also help some disco players in terms of immersion - say, for bridge views from within battleships, etc.
So it's not a totally bad thing.