And a few generic questions I have for the gang.

First, my good ole' alignment shop nailed the problem. No bearings or
bent axles - just a left rear to they said was "waaaaaay out".
Specifically, it was -0.68 deg.  Spec is .10 to .20 degrees on both
rear wheels.  According to the tech, a negative value means the left
rear wheel was pointing in - in this case, way in, causing the rear end
to dog tail right, pushing the nose of the car left, thereby forcing me
to keep the steering wheel over hard right to maintain course.  Thanks
for all your tips in the sister post!  And most of that "roar" is gone.

Now for the questions:

Does a negative value for toe mean the same thing for the left wheels
as for the right?  IOW - does negative mean toe in for the lefts and
for the rights, or does negative toe mean toe OUT for the RIGHTs?

Second question - The toe spec for the '05 Malibu, indicated above is
.10-.20 deg.  If positive values mean "toed out", why would the rear
end of a frontwheel drive car have the wheels toed out? ?

Regards and happy headscratching,

-ChrisCoaster