Thanks for that, @andyb. I had never heard of Capps before and it was a really interesting read. Kudos to Jeff Sullivan at fangraphs. I think this line from Jeff's article sums it up nicely: "I’ve never before seen a delivery quite like this one, so I can forgive the league for not being prepared, but this has potential headache written all over it."
It reminds of me of the hanging chads mess and the future of the country being in the hands of a bunch of people holding sheets of paper against a strong light and saying "What do you think about this one?" Obviously there's a lot less at stake in a baseball game, but the debate will still be embarrassing for all involved.