My observation has been that some instructors become a little complacent at times. Late afternoon sorties are a typical scenario. I am guilty of this and learned the hard way. You alwyas have to expect the unexpected. I note many posts refer to the loss of control....thats exactly what it was, a loss of control due to mishandling. So many students/candidates do not carry out the most important requirement....fly the aircraft......stop the yaw....control your airspeed. Airspeed and Altitude, if you've got one of these you have half a chance, but if you have neither, no chance.