Reading between the lines, what happened what happened was a barrage from both sides over what was going to happen in a reshuffle. Journos have already admitted getting the Benn will be sacked stories from Livingston, Abbot and Milne. As its over Xmas and there was not a lot going on officially, the Blairites had a chance to counter plot....A threat of one out all out if Benn et all went. Much arguing....but Corbyn tested water with first sacking (already forgotten his name) , unprecedented twitter endorsements of the sacked bloke from rest of shadow cabinet. So change of tack rather than sack, change jobs where possible , and only sack the also men...still some other also men stuck to the one out all out...
That's not really a 'manufactured' controversy, certainly not by the media at any rate. If you don't do politics, and most people don't really, its just one of those things, but if you are one of those people who does politics, even if its just colouring in the bottom half of the internet. It was an event of some significance.