AQ Khan was handpicked by the top brass. he sold a lot of pak nuke secrets for personal gain, like sale of materials to Colonel Gaddaffi.If they are threatened with nuclear war, I doubt they will be so cooperative. The will obviously need a country to spend the money in.
Well, they could be made citizens of India or run away to ME.
I doubt the Pakistanis will let people with dodgy profiles gain control over the nukes. They will be hand picked by the top brass.
Also, as i said earlier, if RAW dos its job well, the nuke secrets can be obtained, without the 'nuclear guardians' knowing that the people they are selling location of nukes to is actually India.