To be fair he is a minister who comes from and lives in Peshawar, which is in the Tribal regions (FATA) of northern Pakistan so the politics there are going to be somewhat divisive and pander to the kind of anti-western, fundamental Islamist mentality that would expect their politicians to make such daft pronouncements...it also puts the Pakistani Government in an awkward position and particularly the PM who is an opponent of the ANP, the party to which the Peshawan minister belongs.
Pakistani politics is not in any way comparable to our own and it is not as simple as removing him, at least not without significant negotiation within the coalition first.
Yep, this is what happens when empires take over tribal regions, quit and make countries out of tribal regions. Yugoslavia, the Middle East, Africa, etc .. all worked out so well.