You raised a pertinent point on the President's reaction. Person occupying the President post is supposed to be unbiased and so have been most Presidents in the past including Kalam, who upon the Government's advice dismissed all BJP politicians serving as governors and also the NDA government in Bihar despite UPA voting against him. If the current President doesn't act unbiased, she will only expose herself and the BJP will have a brownie point to score. As far as organising a bandh in Tamilnadu is concerned you are right, they don't have strength there and will end up scoring a self goal.