1. Well, only the passport authority or the court has power of impounding it. Consulate can not do this. Anyway since LOC is already issued you will be arrested in the airport itself once you land in India.
2.Do apply for AB. If it is allowed then you are saved. Else you have come , face arrest and then pray for bail.
3. Not possible as LOC would soon tun into declaring you as proclaimed offender. Do not ryn away from Indian justice system anymore. Take bail and then contest it from abroad.
4. Not possible unless you obtain AB ( Anticipatory Bail? before hand.
Feel free to contact.