Bit of a zombie thread, but
Going back to the original sources, http://www.politico.com/news/stories/0711/60329.html reported on July 31 that "A new Super PAC created to support Mitt Romney raised $12.2 million in the first half of the year entirely from high-dollar contributors" ... "Also giving half-million were New York hedge fund manager Louis Bacon and James Davis, the Boston-based Chairman of New Balance shoes"
Then, http://www.politico.com/blogs/bensmith/0811/Romney_signs_marriage_pledge.html on August 4th reported "Former Massachusetts Gov. Mitt Romney has joined Minnesota Rep. Michele Bachmann and former Sen. Pennsylvania Rick Santorum in signing a pledge to oppose same-sex marriage on a number of specific fronts."
So the New Balance exec donated in the first half of the year, well before Romney made his reach to the hardcore right. I don't see any evidence that he made this donation shortly after Romney's signing of NOM. And on the very link provided, New Balance distanced itself from the personal donations of the chairman, "Mr. Romney’s position on this issue is not reflective of Jim Davis', my or New Balance’s position and support of the gay, lesbian, bisexual, transgendered community."
So if Davis' donation was made long before Romney's decision, and New Balance as a company has publically said they don't support that position, what would anybody want him to do? Davis can't go get the money back.