This page fails to back up its assertion
that the large spool was "just a few feet from the building".
As with the lawn and fence, the spools appear deceptively close
to the building in these zoomed-in images.
The small spools may be about 70 feet from the building,
and the large one appears to be a little less than half that distance,
but without computing their positions we are only guessing.
contains estimates of the positions of the spools.
The large spool is the most problematic for the 757's supposed
flightpath, being the closest to the building,
and rising to about 7 feet in height.
However, it can be imagined that a 757 would have missed the spool
using reasonable assumptions.
If we assume that the plane was dropping 1 foot for every 10,
that its trajectory took the bottom of its fuselage to the height
of 6 feet at the facade,
that the spool was 30 feet from the intersection of the jet's
trajectory with the facade,
and that the spool passed between the engines,
then the plane would have cleared the spool by 2 feet.
Wouldn't the wake turbulence of the jetliner blow the large spool over?
And if the spool toppled, how likely would it be to wind up on its end?
Perhaps it was secured to the ground in some way.
Perhaps the spools were too heavy to be blown around.
There are too many unknown variables relating to the spools
to rely on their apparent post-crash positions as evidence of
any particular crash scenario.