You settle the individual lawsuit with the party that started it. For a work with multiple authors, that wouldn't prevent the other copyright holders from suing you. This is one of the reasons GPL projects make lawyers risk-averse...
Generally the way GPL has been in the courts, the suing party won't just take some money and walk away happy, they'll ask for the infringement to end (one way or the other). That would make other copyright holders happy too.
Generally the way GPL has been in the courts, the suing party won't just take some money and walk away happy, they'll ask for the infringement to end (one way or the other). That would make other copyright holders happy too.