People like you were saying the same thing when Musharraf was in power, that is exact same excuse you were giving to keep Mushi in power. Time has shown that his departure lead to unity of the whole nation against Talibs.
Dude, its not Zardari who is fighting, its the nation which is, though, i don’t think SCwill doanything to remove him, but, even if he goes, the war will continue and in a better way.