I used to post on the zodiackiller.com message board a little bit and I remember that theory well. Bet you were on there too :)
We may have gone back-and-forth on any number of occasions. I was there until 2008, at which time I'd had as much as I could stomach of the proprietor's arrogance and emotional immaturity. Besides, I'd spent more than ten years pursuing the subject, and I really needed to "get a life," so to speak, beyond the Zodiac Killer. So I wrote a book, put it out for sale and said to hell with it.