PJ2
As per the first memory item he would have executed regarding pitch and power in the UAS scenario from his original UAS training, (which was right after takeoff)? Yes, I think it is possible.
And later on it is possible too, they wanted to arrest the descent.
Emit
When the nose goes to 15 degrees above the horizon at FL350, and if you don't want it there, your input should be stick forward untill the nose arrives there where you want it to be.
When the aircraft is descending, and you want it to return to the assigned FL, you have to climb. For that you have to raise the nose (SS NU) and maybe you have to add power (TOGA). If 5° pitch is not enough, lets use more........