To quote a friend paraphrasing the article: SpaceX are doing what an inflight abort of the Dragon 2 spacecraft this Saturday. To make sure Dragon 2 can keep as

To quote a friend paraphrasing the article: SpaceX are doing what an inflight abort of the Dragon 2 spacecraft this Saturday. To make sure Dragon 2 can keep astronauts alive should the ascent phase go badly, they are going to tell it to go into inflight abort mode at MaxQ (when atmospheric pressure is highest) and they hope it will use its rockets to clear off to a safe distance, deploy its parachutes, and splash down safely. The 1st stage won't be protected from the atmospheric forces by Dragon 2 so it will disintegrate with a side order of exploding. Worst case is they scrub (launching early on a Saturday without a launch window, so easy to delay) but under all other scenarios we should get to see something blow up.