For what it's worth, I was with many hundreds of people who were awaiting the arrival of the Vulcan in the vicinity of the Prince of Gloucester Barracks, Grantham (ex RAF Spitalgate) on the day in question and given the elevation of the location I was able to observe the Vulcan make it's approach from the north when it was a good five miles from Grantham and equally observed it's departure to the south until it went out of view some four miles distant.
At no time did it perform any maneuvers other than a slight change of course as it passed over the barracks.
I hope whoever compiled the video clip and published it is eventually named and shamed for being a cad and a bounder!