Glitch house

[Denmen707]

Well, I've put myself in quite a tough spot. I presume I opened a door that should be locked and went inside to find that the house was bugged.

Here you see on the west side of the house you can go into another house through the window and on the side you can see out of the map.

Where the stairs should be, at the end you can see outside but there is an invisible wall.

There appears to be another floor that I can't get to. Also no roof.

So my question is: Is there a way to get out? NoClip?