I think it is the result of US representives discussion with ADVANI.
1) BJP must had felt happy of having their importance felt by US by discussing the issue with them. 2) BJP must had understood the rise in anti Communist wave within the people who supporting the INDO-US deal. and want to score on that.
I dont believe any of this political parties. whatever they do is to benefit them and their party. NOBODY interested in the progress of INDIA