i dont want to leave my home

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please hear me out
I built my home back in 2001 with my own 2 hands its 10,000sqft its a smart home all the amenties you name it it has it. in 2006 i could pay my bills and i went into short sale noone was able to close a buyer finally close this march 2011 it took 2 years for him to close he paid me 15,000 out of a good heart because he knew i had no money.. in addition i have 6 kids so we also signed a contract of him allowing me to stay in the house for 2 months until (may 15th) so my kids can finish up school so i have just over 1 month left in my home.. but i dont want to leave im figuring i can trick him into letting me stay until july 1st .. im not considered a tenant so i cant go to landlord tenant court. because on the contract we signed he made sure i wasnt going to be considered a tenant.. is their anything i can do? he also promise me 5,000 on may 15th please i need help is their anything i can do i already asked him if i can stay longer but he said no he also has kids and they want to get setteled into the house.. but i built this house and they dont deserve it the house is worth over 3 million and they paid 670,000 i need help, advice, tricks is their anything.. i cant leave . i wont leave