RetiredF4;
Thanks for that "Airplane Upset Recovery" link.
Wainwright dealt in general terms with the issues, but seems to have ignored some of the FBW limitations that are inserted into the equation when not in Normal Law - see below.
Machinbird;
... trying to break a stable stall by putting in a bootful of rudder and holding it.
The boot wouldn't have helped that much! Low IAS and only 7.9° of rudder allowed by the RTLU!