Nightmare isnt it! Well none of us reclinded ours as it wouldnt be fair on those behind (and their seats were up against a plastic partition so doubt they could have anyway). Just rude. I might try the random kneeing on the way home if they are there again.Same happened to me back from our honeymoon. Some French hewa lashed his seat back as I was tucking into my chicken and roasted vegetable pasta. I said 'WEAY AYE' to him and he turned around and didn't apologise. I spent the next 6 hours of the flight randomly kneeing the back of his chair and apologising.
Little wanker. Wouldnt have minded if he asked but in answer to your question, I wouldn't do it myself.