There are too many loopholes in the entire staged drama for it to be believed.
1. On the day of Ajaz's entry, BB itself kept ordering Ali to freeze so that Ajaz would repeatedly try to irritate Ali. After a point, it seemed as if BB was desperate to garner audience sympathy for Ali as he was clearly not popular outside inspite of Salman projecting him as a great entertainer.
2. Ajaz was clearly prepped before his entry that he needed to target Ali as he was in direct competition with him as an entertainer. Salman's comments as well as Ajaz's pre-entry interviews clearly indicate that.
3. Imam has been hinting at his entry for the past 3-4 days. So, was it his intuition or dream that an existing challenger will be ousted on grounds of violence ?
4. On the basis of votes, it was very clear that either Dimpy or Ali should have been evicted along with Puneet. If Dimpy needed to be kept for Rahul, the next obvious choice for eviction should have been Ali as Ajaz and Rahul were already there for entertainment. But it seems that BB knew Ajaz will not be available for long so Sonali was sacrificed.
5. Even this Saturday, the only advice Salman gave Ali was not to be afraid od Ajaz. This clearly spurred Ali on to try and take panga with Ajaz.
6. Farah targeted Ajaz for no reason, calling him a monkey and also giving a punishment to him (firstly can't BB creative team come up with any other idea apart from the over-used Sevak punishment?). Whatever Ajaz did to irritate Ali during the freeze task was done on BB's behest so why should he be punished? If BB didn't want that to happen, why did they repeatedly freeze Ali...which brings us back to point 1.