I summarised his technique a few years ago like this:
JP: Jon, don't you think it's morally inexcusable that you
molest young boys?
Jon: Jeremy, it's not true that I molest young boys, that's
misrepresented by the...
JP: I asked you whether you think it's morally inexcusable that you...
Jon: That's not the point, I haven't done it in the first p....
JP: Please answer the question, is it morally inexcusable or not that....
Jon: If I molested young boys it wouldn't morally justifyable that....
JP: Is it or isn't it morally inexcusable, Jon?
Jon: argh