Padawan Blonde: Master Achoo, wasn't there any other alternative? No matter how savage Sand People may be, I feel sorry for their little offsprings...
Master Old-Fart: Now, now, young Jedi. What we did was OK... from a certain point of view...
Padawan Blonde: Reaching your goal no matter the cost - isn't that a way of the Sith, Master?
Master Old-Fart: You're asking too many questions today. I must rest... yeeesss... rest... want some rootling soup? I cooked!
...assuming that they had put this scene on real purpose - to show the fall of a Jedi Master avenging his former apprentice.