I figured my little hint yesterday would spark one of the few people working on my code . . .
Someone believes they've solved it and that someone is none other than Nick Jacoby.
Check out his post over at Cardboard Overload.
Solution is not given away, but he has completed the final task. Thank you to everyone that took a look, I really enjoy creating these and will likely take the next step and put out my own set of custom cards for my next one so that I can have complete creative control. Consider it the Ginter Code tune-up for anyone who will attempt to break that code next summer.
I figure I'll need to make it harder to really challenge these Ginter champs.