This version's a little more difficult than the original.
EDIT: If anyone's interested, I can tweak the speed of the fireballs a little faster or a little slower, and release multiple versions of the hack (Sort of Sadistic, Definitely Sadistic, Mega Sadistic, etc)
EDIT #2: By the way, I created this using the commented disassembly posted on AtariAge a while back. The original programmer, Bob Smith, let Al post it (many thanks to Bob and Dennis Debro!), here's the link to the original thread: