So. Mitt Romney is out of the closet. Comes the news from the left-leaning Slate (which gleaned its initial information from an Atlantic story) that Romney has been caught with a secret Twitter account in the name of “Pierre Delecto.” In which “Pierre Delecto” snarks and mocks everyone from the president to Florida Sen. Marco Rubio to former House Speaker Newt Gingrich and others. It is a remarkable — and damaging — self-inflicted wound. Romney comes across as bitter, insecure, and utterly without principle — and not for the first time. Recall this Romney line from 2002? I’m not a partisan Republican. I’m someone who is