I'm not sure how to disable the scripts, I'm sure there's a console command for it, but I don't know what it is. You may need to ask around on Facepunch or a related forum for help on this.
Is there any way to disable map scripts on GMod?
For instance, I want to do a shot in the Citadel in Half-Life 2, when you're stuck in that capsule thing, and I'd like to get all the automated ones to stop so that I can set up the screenshot.
There's another map I downloaded that has a perfect spot for an idea I have, but that particular square is set to raise and kill whoever's on it. Any way to turn that off?