Hating to sign on as a detractor, to join the nemesis himself of AA, but the pilot possibilities should be looked at. The Human factor bears a peek too. I think there is a 'chance at least' that this landing going wrong may have started before the "loss" of Spoilers. It may have started rolling from the point of the PA announcement to the back re: a "hard" touch. The conditions were dicey on the natch, did the PF challenge himself further to show his pilotage to good effect? Was the Captain joined in? I personally doubt it, but since the pilots will eat their lunch on this anyway, it bears a look, if only to gauge 'a priori' the upshot.