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You can sue them for their unreasonable denial of you living there, based on the convictions being so long ago that their denial is arbitrary and capricious and they are not to "unreasonably deny" membership in the park. A 30+ year old conviction is unreasonable denial, especially for those convictions.
If you choose not to take them to court, your next option is to seek to rent out the home, if there is no prohibition in the bylaws against doing so. If there is a prohibition, your next step is to seek to sell it.
Your final option should be to negotiate with them to give them the home and abandon the property. The problem with this is that if they refuse to take it, they can sue you for the rent and then you would have to file bankruptcy to get the whole debt extinguished and walk away from the whole situation.
Those are your options based on what you have stated.