Yes the pyloric sphincter was removed . As far as I understand . The intestines were hooked back up to the bottom of the stomach.
Mike, do you know what portion - exactly - was removed during the surgery? And was the pyloric sphincter removed, too? That's the valve at the end of the stomach into the intestine. If it was removed, how was the duodenum 'hooked back up' to the stomach. All of the different permutations of rearranging the GI tract can have different outcomes.