Nora Breaks The Rules!

Once upon a time, when I was a newbie writer entering a butt-load of contests, I got this comment back on one of my manuscripts....
"Watch head-hopping! Who do you think you are? Nora Roberts?"
I was miffed. First of all, this was a snarky comment, and not 'constructive criticism.' Second of all, the paragraph receiving this comment was entirely written in one character's POV, and therefore not an example of head-hopping. However, I found the whole Nora-angle fascinating. Since I had never...