Hey I'm having some trouble with this event that I am working on. I thought it would be simple enough but after the character's talk enough it gets stuck on some text.

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Unfortunately it freezes after last text appears. Thoughts?

When people say 'use a self switch to turn off an autorun' they don't mean it literally. They mean use the switch so you can turn on another event page that has nothing in it to turn off an autorun. This event page will come after your autorun, and it will be set to 'Self Switch A is ON'. Then again, you don't even need a self switch since you're already using a global switch and you can use that one instead and completely ignore the self switch.

By the way, since this autorun has no conditions set to it, that will be the first page to run in-game, and it will completely skip over the first event page. VX will always run the LAST event page with no conditions set first.

Read some beginner tutorials, because this is ridiculously easy.

I'm almost afraid to ask what the first event page is...
Personally, I never use self-switches (mainly since there's only 4), and if I'm going to use the insidious autorun, I have it delete itself. And I typically never use double-event pages; that's for doors, which I let VX make for me (hassle).
Assuming this all starts when the guy walks in the room/house/whatever, have it as a "blank" (sprite-less) event hiding somewhere (in a wall or something, so it can't be found or accessed by the player), auto run the event the same way, then have it delete itself. It ensures that the autorun won't stop the "action" (since it's erased itself). You can also save the guy, so that if you missed some detail, you can talk to him again (sans autorun scene).

Yeah, you have to make another page that makes it so that if self switch A is on, nothing happens since the event page would be blank.