More legal issues for "The Real Housewives of Atlanta" star Kelli Ferrell 's ex-husband ... he's been arrested on a theft charge ... and it's a felony. Kelli's ex, Mark Ferrell , was arrested Tuesday and taken into custody in Georgia on a felony charge of theft by taking ... according to online records. It looks like the alleged incident happened back in November … but we are still working on the details. Part 2 of the "Members Only: Palm Beach" reunion wasted no time getting going! The ladies