It's entirely likely the left turn, which changed the airflow from crosswind to tailwind, along with reduced airspeed in the bank, led to the port wing stall, and the resultant unrecoverable situation.
Isn't this an example of what everyone has been saying earlier in this thread is complete BS?
The aircraft doesn't care if it's blowing 300 knots, it just flies merrily along its' way.
What does matter is if a pilot tries to get to a certain spot to land and misjudges their base and final turn due to the ground track, and ends up turning too tight in order to make the intended landing point.