The owners of the Atlanta Thrashers claim to have lost more than $130 million since 2005 and at least another $50 million on the plummeting value of the franchise because of a bitter dispute that ruined their plans to sell the team. The ownership group, known as Atlanta Spirit, revealed their financial woes in a lawsuit against one of the city's most prominent law firms. The lawsuit filed in Fulton County Superior Court claims the owners have been negotiating to sell the Thrashers over the last six years, only to be thwarted by a contentious split with Boston-based co-owner Steve Belkin. That legal tussle was finally settled in December when his shares were bought out.