from the Sauret projection at the whole building above floor 92, flashing between frames 120 and 220 (just over 1.5 sec interval). Remember that the NW corner starts to accelerate downwards around frame 224:
In order to see the degree and direction of local deformation at any point, just hold your pointer still over that point and notice the degree of wiggle.
1) The east corner of the building stays pretty still. The whole portion below floor 98 stays pretty still.
2) The NW corner window washer actually wiggles east-west. Almost no downward displacement, but observable eastward displacement.
3) Notice that the whole west corner above floor 98 is being pulled inwards. The pull-in first becomes noticeable just above floor 98 and grows much stronger in the top few floors.
4) From this projection, the antenna is moving downwards and hooking to the east. It is as if it is falling and slightly pivoting. It seems as if its eastward angle increases slightly over this interval.