Best Way to "Unload" or remove assets in AS3

I read G. Skinner's article on removing resources in AS3 and
garbage collection (
click
for relevant section of article) and I was a bit astounded.
I understand that one must be careful to manage memory --
remove listeners, add weak references, etc -- and clean up when you
go. I.e. I have a basic understanding of how to make assets, once
off the display list, eligible for garbage collection. But let's
say you load a SWF and it's running -- and particularly if this is
not your own SWF, e.g. in a gallery setting -- is there a way to
get rid of it? What if you load in a SWF, and it uses a lot
of CPU -- and you want it
gone when it's gone? Is there any way to really get rid of
things in AS3, or do you just make them eligible for GC and hope
for the best? This seems a very bad thing -- particularly, if, say,
you're loading in content over which you don't have control (as in
that proverbial gallery).

no.
no.
yes.
and yes.
so, just say no to loading assets over which you have no
control.

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