Everything in the letter indicates that Vanzara is losing the supreme faith and higjhest respect that he had for Pheku. As the CBI noose has gotten tighter with each advancing day in the Ishrat Jahan case, Vanzara it is clear feels he needs to up the ante to ensure he is protected. Hence his decision to threaten Pheku with the possibility that his graceful silence is not guaranteed. The threat is clear. He reminds Pheku:
that he [pheku], in the hurry of marching towards Delhi, may kindly not forget to repay the debt which he owes to jailed police officers who endowed him with the halo of?