I liked that scene too. In fact, during the Radio interview, I was shocked at how much I heard that interview and cringed because we got to see Prison life from the Prisoner's point of view. Are they still criminals, yes and there is no denying that. The thing is though that they are still human beings and life has to go on. That scene with the screwdriver really does drive home that point, and how much Piper has changed since the beginning of the show.