There was more to it than that.
Yes, IMP canceled the 930 show and put Spoon on the Shins MPP bill. They then booked Spoon to play a show at the club the next night but the admission to the 930 show had something to do with some sort of convoluted idea that involved buying tickets to the Shins show...the details of which I'm a little foggy on.
They then listed the Spoon show as "sold out" and didn't sell tickets to it but the turnout to the Spoon show at the club was very low because not many ticket holders from the previous night showed up.