Peter, I hope that you are right. As the man was not in fact a british lawyer, as not member of the Law Society and also not an estate agent, I think it will be hard to make him liable for releasing the money. Trying to hold him accountable to professional standards may be asking too much. A normal person will argue that they only released it because the buyers gave him the ok and once the 40% was paid he was required to pay the commission.
Its all interesting, but I think that Lovesquadsue that you are currently only using the forum to put pressure on the agent. You are not prepared to name as you are using this as a lever. Someone could be using this same agent and have the same problems as you. So I think that its only fair to name the agent. I understand why you are reluntant to name. You fear that this may be the final excuse not to pay. However, I think that the opposite is true. Once the agent is name, you will find that other people will put pressue on them. As no matter the rights and wrongs of the lawyer, there is no excuse to hold on to commission for an apartment that they did not sale.
I wish you the best. Just don't throw good money after bad.