I saw an earlier post on secret tantric postures, guess it was in the back of my mind. Vola! I just discovered something. The reason why the yogini's head is always tilted towards right, when the yogi is sitting erect in padmasana. For the same reason why Jesus's head on cross is always tilted to the right.
"Because she is in samadhi!" Thus its clear, tantra is not simply an erotic body mind exercise that has come to be played out in the recent times...