Not disclosing one shot doesn't make that much of a difference.
Not disclosing that a pitcher was getting a CORTISONE shot during negotiations for said pitcher makes a hell of a lot difference in my book.
I'm not going to debate it, I refuse to change my mind about it, it was shifty, underhanded and essentially cheating. Spin it how you want. I got my spin and in it Bowden shows his true colors.