Todd Pattist wrote:
..
We're not talking about a "turn," but rather a pullup from
nose down attitude. You can't really compare the situation
where gravity imposes 1 g to the case where the g-load is
not externally imposed.
...


A similar effect arises even in this situation: when the lift
is reduced due to the extended brakes, the radius of curvature
increases. By rotational inertia the glider will tend to keep
the same rate of rotation around the pitch axis, so that the
AOA increases, i.e. the g-load increases and the radius of curvature
decreases. Of course the rotational inertia will not have a total
success in trying to keep the rotational rate, as the AOA increases
this also changes the AOA at the tail plane, providing the moment
which is going to reduce the rotational rate. However the radius
obtained in this way is not what would be obtained by just reducing
the lift, there is still a (partial) load transfer to the wing tips.