Not only that, but he's been consistently pro globalization for his entire public career - even his work that lead to a nobel prize was along this issue.
In a conversation-oriented forum like this, the context of a remark is important. It was in response to a claim that this was some sort of libertarian fantasy, not radical thinking overall. I think it's pretty safe to say Krugman is not a radical libertarian (hence the "even Paul Krugman").
As is pretty much every economist. Neoclassical economics (which borrows many of Keynes' ideas) dominates modern economic thought. 'Austrians' seem to exist only on the internet...
As if Paul Krugman is the pinnacle of radical thought on the issue?
He is a Keynesian -- which I guess counts for something like "far left" in the US.