Why didn't I cast you as the bad guy? You would have made an awesome villain!
Anyways, back to the game. The Insane Man isn't dead yet, he's just catatonic again. As for what to do with him, I think we should wait till Victoria and Garnet say what they want to do with the Insane Man.
Also, as far as you know, there are only four places on the island where someone could be tossed from a high height. There is the Lakehouse (you can be thrown from the top of the building though it's only two stories and not that big), the Balcony overlooking the Entrance Hall, the wrap around porch, and the second floor of the Library.