It certainly seems to have been adequately handled. How many of us have ever had to divert from an alternate?
Last time I went around on the NG (due to windshear) we had used the best part of a ton extra before we were safely down, and that was without a diversion.
Better to err on the side of caution than the other way around!
However with the benefit of hindsight the choice of Teeside looks a little strange.