Unfortunately he's been having some problems getting the calc working, but after a hiatus he's back at it again.
In both of these cases though, what I see is a willingness to seek and attribute supernatural involvement to natural occurances. I think that sometimes we devalue both chance, human potential, and our own willingness to be convinced.
This article by Paigham Mustafa is about Rashad Khalifa's claims to be a Messenger of G!d and on that authority removing a few words from the Quran in his translation because they didn't fit the pattern perfectly:
Rashad Khalifa Purifier or Pretender?
Rashad claims those verses were added at a later time by scribes. The article also examines some of his more megalomaniacal claims to authority and other ways he's acted on them in the way he translated the quran (like reading in allusions to himself as a messenger.)
The wikipedia article on Rashad Khalifa points out that a number of Muslim countries banned his books and branded him a heretic:
Rashad Khalifa - Wikipedia, the free encyclopedia
His followers believe that Islam, as well as Judaism and Christianity, are "severely corrupted and will simply die out."
Lastly, this article covers some of the issues mentioned previously as well as the inconsistency of the Rashad Khalifa's methodology, probability, similar number repetition in the bible, and examples of the results of arbitrarily looking for appearances of the number 19.
The numerology of Dr. Rashad Khalifa - scientist Skeptical Inquirer - Find Articles