the law (for a change) ... it's with his financier, who claims Hall defaulted on a mortgage and now owes him $75,000.
According to a lawsuit filed in Florida, Hall borrowed $75,000 to buy a house in Seminole County in June 2011. The lawsuit claims Hall missed his final balloon payment due last December and has flat out refused to pay it.
The docs say Hall -- who was arrested this month for allegedly beating his girlfriend -- is not even living in the home in question and it currently vacant.
The lender is looking to foreclose on the house and sell it ... and wants Hall to pay the difference (if there is one).
Hall's rep had no comment.