If they just wanted to have a referendum they could have planned this ages ago. Instead they suddenly announced it in the middle of negotiations, without even t

If they just wanted to have a referendum they could have planned this ages ago. Instead they suddenly announced it in the middle of negotiations, without even telling their own delegates. And then they set the date after the deadline and say they will campaign against it themselves. To me this looks like either an attempt to stall for time or an attempt to shift the blame for to the EU, no matter what happens. Why should the EU play along and extend the bailout any longer, throwing more good money after bad?