Thanks for clarifying... I read the parent as claiming that the looters (who you refer to as the "masses") are "John Galt in action". It makes more sense to say that the productive farmers picking up and leaving ("striking") would be John Galt in action. However, I think they were generally forced out by the thugs rather than (more Galt-like) voluntarily abandoning their industries.
The way this relates to Ayn Rand is that in all her stories the captains of industry are pervceived as evil profit mongers by the masses. The masses evantually rise up and take back what's "theirs" and the entire economy grinds to a halt. This is what Rand witnessed in the Russian Revolution and this is exactly what is happening in Zimbabwe today.