Apparently not.
That was a direct quote from his letter. The spelling and grammatical errors were his.
( The Resident Loon Not a demographic. Do not measure., Sun 10 Apr 2011, 22:23, 2 replies)

Ah yes
I read it.

My apologies Sir.

I remember reading about him a good few years ago. He also turns up in 'Black House' by Stephen King and Peter Straub.
( His Popiness the Hole Invaded Poland on, Sun 10 Apr 2011, 22:36, closed)

I remember that.
In fact, it was after reading that book that I really looked him up and read the details. Though I have a pretty wild imagination, I never could have invented something like this.

He was the very definition of evil.
( The Resident Loon Not a demographic. Do not measure., Sun 10 Apr 2011, 22:45, closed)

Caleb Carr borrowd from him as well
for 'The Alienist', which was quite good.
(louveciennes , Volvospotter, Mon 11 Apr 2011, 18:13, closed)

Also IIRC
After he was executed, they x-rayed him and found that he'd been knocking pins into his balls. I'm sure I saw a pic of it when I first read about him.

Edit : Yep, bit more info :

msgboard.snopes.com/cgi-bin/ultimatebb.cgi?ubb=get_topic;f=91;t=000585;p=1
( His Popiness the Hole Invaded Poland on, Sun 10 Apr 2011, 22:45, closed)