HeavyMetallist, "Why some people persist in believing that stalled == totally ineffective is a mystery."
gums has posted some graphs that show an actual inversion of control for a totally different kind of aircraft when in a bad enough AoA configuration. Somebody else posted a graph I believed was for the A330 produced by calculations that indicated an AoA of 61 was sufficient to put the A330 into a realm where the tail was not particularly effective.
That said, it appears from the release, in a part I'd forgotten (take your own advice, Joanne), that there still was some authority from the tail surface. Unless the PF pulled up again after the stall warning the tail surface did not have enough authority to pull them out in the remaining 2 minutes. So it was basically ineffective or marginally effective.