If you're asking whether the binding arbitration clause would apply to the murder case, then no. Homicide falls under criminal law, where the state is the plaintiff. The state didn't enter an agreement under the TOS. I suppose Disney could try to argue it applies if your legal estate filed a civil suit; in the real case it argued that the arbitration clause applied because the husband (who'd agreed to it) filed a civil suit as the plaintiff.

Instead, Disney would get away with it the old-fashioned way: because it's a rich corporation.