I think he's clearly pissed off but then surely he's right to be. Given that he did admit she offered him some money back (albeit not enough), I don't think this review sounds vindictive.
Having said that, the tone/language in the review is indicative of someone who doesn't really enjoy punting. At any rate, I certainly believe the review (even though I have actually seen her myself and had a good punt, albeit a few years ago) and appreciate that he took the time to write it. Personally, I would like to see more reviews from him, particularly any more negatives as they're often the most helpful.