My point was: I have seen clients receive work, change the password on their site and not pay for it. In relation to the topic, it is not possible for the developer to remove the work so whether it is ethical to denounce the client publicly otherwise is the dilemma (personally I would not do this and send a debt collector, but then again you're not always in the same country). So what do you do, put a bad review on Yelp?
You could try to recover the costs legally. In the UK we have a swift procedure which could make it a legal matter with payment due immediately or a plan to clear balance arranged.