Life estates don't shield people from creditors. Any judgments against brother that's running from bills will have to be paid from proceeds of any sale or partition action, so you're in a bad spot. And, if he wants his costs back, how are you supposed to do that without his bill collectors attacking his money? Cash under the table?
Sit with a local attorney to outline your rights & potential remedies.
I may be guessing or not licensed in your state. No atty/client relationship exists.
You can sell but it will be subject to the life estate so no one will likely buy.
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