Huh. I remember him being pretty obsessed in Grotesque and not sleeping normally, but also remaining focused and rational. It doesn't seem out of line at all that his father would have beat him as a kid, that seems rather fitting with his cold, distant, dysfunctional interactions with his son, but I don't buy the "goes nuts and vomits a lot" part. Meh. I think I'll pass on Oklahoma. Thanks for explaining, I was feeling awfully confused!