Principle #7 of The Perfect Virus, BLACK BOX PORTABILITY, might well be part of the decryption answer. Unfortunately, since Ricky McCormick is dead, the presentation and ACK/NACK process to virally infect Ricky's "alien architecture" can't move forward. Nevertheless, as I develop my fictional "suspension of belief" technology scenarios, Ricky McCormick's secret code gives me some intellectual displacement activity. Along those lines, should any of my überhacker readers crack the code, I'd appreciate your cc'ing me in your correspondence with the FBI. And if my Wolfram|Alpha and/or Mathematica experiments bear fruit, I promise to post my solution in this blog (right after I send my note to the FBI, assuming the solution doesn't compromise the FBI's nabbing the murderer).
NOTE: Solved by JOSEPH from SPAIN and reported in my post of 16 November 2011.