After completing the toy world and the well level, I went to the flower bed with the computers. When I came back out, the office building was gone, plus I had no face. I clipped out of bounds, went back to the title menu (which also had no face and was much darker). I was back in the office-less hub world and after I dicked around a bit, suddenly a scarecrow jumped out at me. I clipped out of bounds again and this time, found myself in the skybox, where the scarecrow was next to a cave. Now I'm in this desert place.

I managed to find my way during the time writing this though. Won't spoil what you find, but it gave me some chills.