In this drama one truth came out. Arya, Pritam and Karishma plotted to evict Puneet. Whatever Puneet did was not with the intention of hurting the other contestant. It was a task and probably he went overboard. But he had no intention of hurting anyone.
Earlier there were evictions for getting physical. But in those incidents the intention of the person who attacked was clear i.e. to hurt another person. But in Puneet's case it is not so. Whatever the attack he has done, it was only during the task, not with the intention of hurting. He used to take the tasks seriously and in that mood some small violence has happened. What can be said is that, he should have been a bit careful.
But in todays incident, it was not a task and there was no need for getting physical. So Ajaz should be punished. But Ali did his maximum to instigate Ajaz and did OTT drama too, the way he instigated Arya to do.