our airline introduced unusual attitude recovery quite awhile ago...after one of our planes had a rudder hardover and killed everyone
and when we started unusual attidue recovery training, with the exception of turning off the hydraulics to the rudder, it was just like being in a light GA aircraft like when I was a flight instructor.
there are some good words of wisdom from WEBB in "FLY THE WING" and DAvies in "handling the big jets".
we also instituted feet on rudders and hand near yoke below FL180.
and the best way is to avoid gtting upside down in the first place!~