Resignation over moral grounds, is an alien thing for these thugs/politicians. He had a choice of resignation and to become president in past when Panama Leaks made it to mainstream but now as the matter is pending in the court, IMO, wouldn't be easy for him to do so as such. However, PMLn is fully prepared to become political martyr to have an excuse by next election though NS has no option especially his daughter which itself is involved in the matter. NS is desperate and waiting for a hit to avail the opportunity and to play a victim card however, his interest was about Dar but the same person is also check mate before could do it.
PPPP is fully supporting him and nowadays, AAZ is lecturing him to opt a way where can get immunity instead of being proven innocent from Court that both parties knew, they are involved and are guilty. NS cannot turn the tide now as Panama Leaks will haunt him and his family for many days to come until & unless a verdict by the Court that seems to be his disqualification along with blockage of children into politics in advance. PMLn and PPPP are sitting together and are trying to come-up with a strategy to minimize the damage and will play "this time me & next you" thing.
NS was expecting political martyrdom during RS times but the same is gone and embarrassment will continue for these thugs till the judgment by the Court in current case which will not stop or limit to PMLn but next is PPPP as well. AAZ is trying to settle the matters through international players for himself as well as for NS but seems like things gone hard and impossible for the couple. On side note, Fazal-Ur-Rehman would be better choice for NS in these times as well as for PPPP as both will agree upon that the man can work with both parties. However, to create a mess, AAZ or NS would prefer a man like Achakzai that his existence can harm us more than an enemy and such choice could be made to create a chaos and anarchy in Pakistan, based upon the best interests of their handlers.
From a solution point of view, IMO, Article 62 & 63 be implemented, a care taker Government to be formed after his/all disqualification and cases of corruption-treason-loot needs to be reopened in the best interest of Nation, clear the mess through investigation and evaluate all the culprits, punish and filter them persons/parties without any difference and ban the criminals for life time along-with recovery orders for the loot- money laundering as well as by referring names in Exit Control List and then announce elections.