The wall went up just in time.In a written opinion Tuesday, U.S. District Judge Sara L. Ellis declined to disqualify Lewis Brisbois Bisgaard & Smith LLP from defending a former Sauk Village mayor against a civil rights lawsuit.Ellis did find Lewis Brisbois has a conflict of interest because one of its lawyers previously represented the woman who filed the suit in another suit.But Ellis held Lewis Brisbois had placed “an ethical wall” around lawyer Gabriel R. Judd “that blocks him from access to the …