Is Krugman changing his position towards Economics?

In my last post, I criticize Krugman for failing to mention heterodox economics in his recent NYT article. In many ways, I thought the article was good but the same old, mainstream Krugman. However, the last entry in his blog (see here) is more surprising and reveals some changes. After insisting for years in the importance of presenting all arguments in mathematical language, he now recognizes that there is some good work in economics with no math. If only this view could expand a little...