Wow.
The decision to circle to land was taken in an ad hoc manner. No briefing of the procedure, or discussion of a go around. The aircraft was high and fast when the descent was initiated from about 35 miles out, and there was no specific communication about that changing that until the stall and spin occurred.
Flying through the runway centerline and "tightening up" the turn has caused many crashes in lesser aircraft. This professional crew in a jet made the same mistake, and considering the plane was in a 37° bank, rolled over and went in just .8 miles from the threshold, one has to wonder if the FO's not so subtle needling of the CA turned the approach into a "I'll show you how it's done" affair by both pilots. The FO sealed the deal when he deployed the spoilers.