I think you missed phloog's point. For all we know, Goodman might not get the implication, either (unless he's bringing a sell-out stock to GenCon or not branding these "OGL 4e" adventures as part of the same "product line".)
If he is, in fact, using the OGL, he has to pulp any unsold adventures when he puts out his GSL products in October if they are part of the same "game line" under the terms of the GSL.
No he doesn't. Take the time to actually read the GSL.