As we discussed in earlier posts, BJP is the only party with least electoral stakes in Andhra Pradesh. It neither gains nor loss seats in AP through accepting or rejecting Telangana state formation.
Moreover BJP is likely to loss credibility at the national level if it took back it's long standing support for Telangana state.
Only advantage for BJP in rejecting Telangana will be it's alliance prospects with the TDP. It can demand for more number of seats from TDP in the Lok Sabha and Assembly Elections 2014. At the same time, TDP may also try to keep the BJP in the control through fielding dummy candidates in seats alloted to BJP.
Considering all these, BJP has less options on Telangana than supporting it with demands that can be ignored by the congress.