If you read his blog, he states that he has a pretty long lead time. He says relation to current events just happens coincidentally. When you think about it, he publishes one comic a day and they're often total non sequiturs, so it will happen by circumstance somewhat frequently.

If he even has the ability to get one approved and published quickly, which I'd say is doubtful given that it's print, it's probably a nuclear option that he wouldn't use for having seen a few threads here.