"make the claim that this work is "ours" is not correct," Dr. Shaw said in the e-mail"

Interesting that Dr. Shaw was willing to claim the work as being his by being a co-author and then actively distancing himself from it once problems were pointed out.  People should not be including themselves as co-authors on papers if they are not materially contributing to the work.  I wonder how many other papers Dr. Shaw has co-authored were his contribution is "peripheral" and it really isn't his work, in the same context as this one?