snarky:
as one who has the (often unenviable) responsibility to read medical journals and analyze articles on a routine basis, i can see the original study certainly has methodological flaws. unless i missed something, i didn't see where flamm's article, which is more calumny than refutation, helps support or weaken the concept of "healing" prayer, or helps us understand the strengths or failings of the study results.
That's not to say that healing prayer isn't a reality, but it is to say that healing prayer isn't proved to exist by this study.