If Rey had done it…maybe
Them showing Kylo stopping the blaster was a good way of introducing a new skill in a plausible way
Rey and Kylo grabbing the ship was a big leap but both had been established as very strong force wielders
The force healing was a stretch but still within boundaries
Had Ezra been the one to force push Sabine, it would have been akin to grabbing the ship- ‘ok we haven’t seen that before, but we’ve seen Ezra as very powerful’
But Hiyang very specifically said Sabine was the worst trainee he’s seen in 2500 years
So not only is it not plausible ‘from a certain point of view’ the show went out of its way to say it’s not possible