A Strange Little Big Planet 2 Glitch from 2012

 Hi there, I have just recently got into lost media and I had come across something strange I am unsure about. Back in December of 2012, I was playing Little Big Planet 2. I was on the train level in the Victoria's Laboratory and I was on some type of puzzle where you would have to throw cakes. But with 1 life left I fell in-between the tracks, but in-between the track I had lived and fell into what I think was a test stage. In the test stage there were the stacked cake monsters and the stack increased by 1 after I killed the first one until I came across one I couldn't kill. The background was a dull yellow with those chain metal stairs you see on the side of apartments sometimes. Other than that the level was quite bland, I soon restarted my PlayStation only for the game to work just fine again. Can anyone check if this is a test stage of sorts, others have been no help claiming it to be a creepy pasta.