An Atlanta real estate entrepreneur who left the company he founded earlier this year to head the regional office for a national sales and marketing firm is accused of trying to cripple the company so that it would be forced to sell out to his new employer.

According to a lawsuit filed this week in Fulton County, Ga., Superior Court, David Tufts — founder and president of The Condo Store, which he later sold to Coldwell Banker — stole clients from his former employer while still on the payroll and offered the “best and brightest” employees advice on how to circumvent their noncompete agreements.