Miauk
The Harbord case is a couple of years old. 2006 at least. I believe it has been appealed and is working its way through the UK judicial system.
On the face of it, it looks like a victory for the common man, but you need to look and the impact on all consumers, not just this one guy (and kid).
TC had an aircraft go tech (let's assume it was unforeseen) and they decided that in order to impact on the fewest possible passengers they would juggle their aircraft about (I'm assuming that the 'least disruption to their schedule is also the least disruption to their customers).
So if this decision prevails the airline will loose the ability to look at the big picture and will loose the flexibility to keep the disruption to a minimum.