Hello,
A simple experiment using an AC coil, rod to fit inside of coil, and
several washers that fit the rod, seems to contradict your evidence. 
Using aluminum for the washers and steel for the rod, when AC
electricity is applyed to the coil, the washers will seem to float on
the rod.  The strength of the field and the mass of the washers 
determines where the washers will move to.

Although the experiment is used to demonstrate dimagnetic materials,
it also suggests that magnetic lines of force are not open.

As a thought experiment, what would happen if the earth spewed lines
of magnetism from it's axis.  We would not have a clear astronomical
vewing that is found at the north pole.  The magnetic lines of force
would probably distort viewing of stars.

This is my view on the subject.  I refuse to use existing formulas to
explain the subject, because they are not conclusive one way or
another.  This is one of the problems with convential thought of
electromagnetics.

Another disclaimer, I am not trying to suggest any changes to
convential thinking, only to offer a discussion point on this subject.

If I have not interperated your conclusions properly, please clarify
your position.