The SB Nation MLB Awards voting ends on a cliffhanger, as the final category is for the best violation of baseball's unwritten rules.
It's paradoxical to try to write guidelines for voting on unwritten rules. Those rules come about because highly competitive high-strung athletes react first, then try to codify the circumstances to explain just how their sensibilities were violated.
So let's do the same. I could say, "Vote for the most flagrant offense," or, "Vote for the silliest offense." Instead, just let raw emotion guide you to the polls, and then try to justify it afterward.