Not to be mean at all, so sorry if I sound that way. But I discovered this room when I was a played the game on my third playthrough, I just never bothered to mention it. Turns out speedrunners already knew that this room existed for a long while now, as it was talked about in one of the GDQs marathon runs. I forget which run though, and I'm not wanting to track it down. It's still an interesting find nonetheless.