There are only 3 scenerios.
1) You can move out of the Lease Purchase house and lose any option consideration that you had.
2) You can remain in the house, sign a new lease, and continue to simply rent the house as a traditional renter.
3) You can go to the landlord/seller, explain the situation, and re-negotiate the terms of the Lease Option contracts. The landlord/seller may (if you've been a quality tenant), simply ask for more option consideration money and keep the remaining details the same (of course with new paperwork). The landlord/seller may set new terms such as purchase price, length of lease, monthly lease payments, and rent credits. All of which can be negotiated.
Hope this helps you out a little bit.