Based on the search results, the resignation of PTI lawmakers from National Assembly standing committees was directly ordered by party founder Imran Khan, with his family members—particularly his sisters—playing a visible role in communicating and reinforcing these directives. Here’s a detailed analysis:

📜 1. Imran Khan’s Direct Orders

Imran Khan instructed all PTI members to resign from NA standing committees and boycott by-elections, citing grievances over the disqualification of PTI lawmakers related to the May 9 riots and an “uneven political playing field” .
The resignations were intended as a protest against the government and ECP’s actions, which PTI views as unjust .

👥 2. Role of Imran Khan’s Family

Aleema Khan (Imran’s sister) publicly announced the resignation orders to journalists outside Adiala Jail after meeting Imran. She emphasized that PTI would not participate in by-elections and that resignations were mandatory .
Uzma Khan (another sister) reinforced Imran’s stance, stating that contesting by-elections would “legitimize unfair disqualifications” and harm the party’s movement .
The family’s involvement extended to relaying Imran’s health updates (e.g., eye issues) and condemning arrests of his nephews (Shershah and Shahrez Khan), linking personal grievances to political decisions .

⚖️ 3. Internal Party Dynamics

The directives caused internal strife:
- PTI’s political committee initially voted 13-9 to contest by-elections, defying Imran’s wishes, but reversed course after family-intervened communications .
- Secretary General Salman Akram Raja attempted to resign over the disagreement but was reportedly asked to stay by Imran .
Some lawmakers (e.g., Barrister Gohar) promptly complied, while 25 PTI/SIC members delayed resigning due to being abroad, ill, or awaiting clarity .

🏛️ 4. Government Response and Impact

National Assembly Speaker Ayaz Sadiq delayed accepting resignations at the government’s request, leaving members in limbo .
Information Minister Attaullah Tarar urged PTI to reconsider, praising their committee contributions .

💎 5. Conclusion

The resignations were primarily driven by Imran Khan’s directives, amplified by his family’s public advocacy. This highlights PTI’s centralized decision-making and the influence of Imran’s inner circle, albeit amid internal dissent and strategic disagreements. The government’s delay in accepting resignations further complicates PTI’s disengagement strategy.