Regarding atispatory bail in andhra pradesh

You can certainly withdraw your consent - and without your consent on the second motion - no divorce would be granted. As a backlash it is good that you anticipate a 498A case. But don't move a 498A AB yet - it is sure to get dismissed. Only do that once complaint is filed by the woman. As regards charges for the same - depends on the standing of your lawyer and his calibre.

But if I apply for bail only after the complaint I am scared that unessacerily my parents sisters and brother in laws might also get arrested. I heard as soon as the girl files 498a the police arrests all the accused without any prior investigation and knowing the facts. If that is the case my old parents and ppl who are not connected to this in anyway ( my sisters and their hunbads ) will also be arrested. That is what is prompting me to go for AB.

Am I right or is it only me who will suffer and rest would not be arrested immediately?

Two things you must do immediately:  First write a complaint saying that you both filed MCD as you were forced by in-law and now you want to withdraw it.  When you showed your inclination to withdraw, your fil has threatened of filing S.498-A false case.  You give the complaint to the S.H.O. of area P.S. and get acknowledgment of the same.  You send the copies of the same before the higher police authorities.  When you appear in the court in MCD, you clearly give your statement that you want to stay with your wife and threats of your in-law and get it recorded.  Once 498-A complaint will be filed by the wife, these complaints and your statement before MCD coourt can be helpful.  These complaints will also be helpful for you to get anticipatory as well as regular bail, when the time arrives to get such relief.