I don't know. Maybe someone with some lawyer history can answer but my gut tells me she couldn't force him to sell. He might have to buy her out of her portion of the team but that doesn't mean he'd have to sell the team. I bet, without knowing what happens in their home, that Gene knew before the story broke. So it didn't catch her off guard. So she probably had time to grieve and accept what happened a while ago. As much as I bash Jerry in a way I feel bad for him. I bet this love child has caused a lot of problems for him before anyone knew about it. With a hurt wife and hurt kids through infidelity there's no amount of money that can make you happy. I feel sorry for Jerry a little bit but he deserves to be hurting since he cheated. But Gene and the rest of kids, including Alexandra, are the ones I really feel bad for. They didn't deserve this. This whole situation just kind of sucks for everyone involved.
But anyway, I got off on a tangent. I seriously doubt if they got a divorce she could "force" him to sell.