The "poison pill" if it exists, probably won't matter much. All that will happen is that a company like "Malhavoc Games" will spawn two legal incorporated entities, something like "Malhavoc, Inc" and "Malhavoc Enterprises", and one will make OGL and the other will make GSL. It will be an inconvenience for these companies, but won't have any tangible effect (other than feeding lawyers).