From Denver - yes, "dropping out of warp," "blowing across bottle neck," are also nice descriptions for what I'm hearing. Slat deployment also seems to make sense in terms of altitude/distance from airport.
Side question - in that report .pdf, where slat noise mitigation was attempted by "filling in" the slot between the slat and wing with brushes or extensions - wouldn't that to some extent reduce slat effectiveness? I though slats delayed onset of stall in part by the venturi effect of the slot (similar to slotted flaps).