I think the announcement of saving any one of the Nominated people is an experiment gone wrong.BB people might not have thought that Sampat would win the Contest with such creativity & Member Voting.They wanted to save either Rajeev or Kashif.In the present Scenario,i think it's Rajeev whom they wanted to save.Kashif is already highly unwanted so Housemates would hardly try to save him.Rather say,Kashif's part is over & he has gone into a Shell now.So it's better for BB to get rid of him whereas Rajeev's activities can provide some Fight Masalas.
Housemates,on the other hand,would try to save Sampat,being weaker, as she can be eliminated in later stages.