??????......er....if I’m pointing down at the ground (let alone 49 degrees down) I’m going to close the throttles, pull the speed brake and pull.....probably the only way you’re going to get any chance of gaining altitude......once you’ve arrested the descent.....
A4 (10,000+ hrs Airbus)
then do not use the speedbrakes but very slowly, increase pitch and convert your energy into climb.
putting out the speedbrakes increases your load on the airframe even more, increasing the chance of an inflight breakup.