I personally posited that, at least after the first stall, the crew had achieved a recovery, but not completed it.
I gained that impression too.. reading it like a novel almost, having fought the good fight I found it heartrending to see that good work thrown away almost as success seemed within their grasp. Maybe because I've been in a similar situation - and admittedly succumbed after getting close to a solution
(not talking airliners here of course!)
NB: These modern turbofans giving unprecendented levels of thrust at low airspeeds, in situations like these, seem to be a double-edged sword, mounted so low in relation to the aerodynamic & mass centres.