As I suggested in post 362 not setting go-around thrust is at least a conceivable scenario. The good news is that no one was killed and with the plane easily accessible we should know relatively quickly what really happened.
The very good news is that if (so far we are all speculating) this really was operator error, then here is clear proof that pay to fly / erosion of conditions / call it what you will, is financially a questionable idea.
It is unlikely that the authorities are going to act as quickly as we would all like (at least those of us at the sharp end) to legislate worlwide against P2F. But if you write off brand new Boeings as a result then the insurance and leasing companies will start to take notice. So far management have told us everyone is doing it and there is no issue. Events are starting to suggest otherwise.
Insurance for eighteen year olds in high performance cars is logically hard to get. Once the insurance and leasing companies recognise pay to fly is very similar they will understand what a spectacularly bad idea it is financially and do something about it.