It is about money, whether or not we have been right in this case only time will tell but in general I don't think it does any harm to publicise the fact that we are prepared to walk away form deals we consider overpriced or people try and renegotiate.
My take is we had reached an agreement and they used Manure to get a better deal.
That must have left a sour taste so we decided to walk away rather than match the deal.