If this is so, Nawaz can easily diffuse the situation by meeting with Altaf hussain, and issuing some conciliatory statement where he regrets the deaths of many muhajirs and the hatred the rest of the country felt because of the jinnah-pur incident, etc. etc.
Also he should apologize for being an ISI pawn (as per Aslam Beg/Hamid gul), taking 3.5 million from yunus habib as per Asad Durran etc. etc.