I think many people have misinterpreted this article. They say that they have changed the way they categorise links in Webmaster Tools, it does not mention any change in the algorithm. Many comments on the article asked for clarification on this and here is the response:
"Re: all the search algorithm- and ranking-related questions: This update only changes how links are displayed in Webmaster Tools. It doesn't affect how links are valued in relation to the search algorithm or ranking. It has nothing to do with Panda, nothing to do with keywords, nothing to do with PageRank."
So you should still leak a bit of link juice from a 301.