My wife and I owned a similar trike back in Germany and obviously also had a pilot's license for it, I therefore have some experience with them.
Stalling a trike from a straight and level flight is pretty hard, you actually have to push the bar all the way forward for that. To recover from a stall, the bar has to be pulled back, as the trike accelerates, the pilots slowly moves it forward to a neutral position. Pretty easy, there is not even a ball which needs to be centered.
Now, a stall after a take off is a very different story. More precisely, a stall after a power failure during the take off climb. Because trikes climb so well, particularly those with a Rotax 912, they can climb at a very steep angle. If the engine quits during such an excessively steep climb, a whip stall might be the result. This again could possibly cause the trike to tuck and tumble, what would be unrecoverable. I understand that modern wings don't have much of a tendency to tuck / tumble, with the wrong pilot input it can over still be done. Even if it doesn't tuck / tumble, a whip stall is still pretty terrifying. An inexperienced pilot might react improperly and possibly cause the trike to go from one stall to the next, violently swinging back and forth, until he finally hits the ground.
This is what a tumbling trike looks like. Not pretty:
