Let's just say I could've done more - now I wish I had. I wrote them an addendum with my application, but I wrote that to every school (it explains the difference between my degree GPA and UGPA). About 2 weeks after going complete I wrote them an email which expressed heavy interest and a focus, but I didn't write an official LOCI.
I'm going to pull out all of the stops now. I might contact another prof from my alma mater and see if they can whip up a little LOR, and I am going to try to get ahold of the admissions office and see if they will grant me an interview.
Looks like I might have to shave..