Going back to Pakistan at this point would mean basically picking how you want to go out. Either by defending your life in one last moment before a corrupt government takes your down, or letting them beat you in prison and slowly watch your soul and fighting spirit wither away in prison until you die. I presume if that's how they wanted to go, they would have been doing this journalism inside Pakistan right now.
In that case you need to arrange for the violent overthrow of the current (ie since ~5 months ago) Pakistani government. The absence/removal of malicious libel from twitter, even if twitter were non-evil enough to bother doing that, will not prevent you from being kidnapped and tortured.
You want to go back to your country and not be killed on the spot, you organize a coup there, not whine on Twitter or to it. Whines don't do shit, it's that simple.
> In Pakistan, activists and journalists are routinely picked up (abducted) and tortured by the country's police and secret services. Same happened this time, some of the top journalists and anchors were picked up - some without warrants with fake cases filed post-arrest.
Twitter removing the fake claims won't stop the ISI or whoever from kicking his door in, if/when he returns to Pakistan.