Re: From another angle...
Parliamentary Sovereignty stems from Cromwell's victory in the civil war. It isn't very different from William taking over "by Right of Conquest". However, times change. I doubt it has been true for a very long time that Parliament, or anyone else, could dominate this country by force. In practice, then, absolute power rests with the people as a whole and Parliament *remains* Sovereign because it suits us to delegate the job.
On this occasion, however, Parliament punted and gave us the job back. It would be unwise to turn round and tell us that we gave the wrong answer.