As others have pointed out, the Falcon did exactly what it was supposed to do under the circumstances — it was a successful abort. It’s too bad that they have the three-day constraint for the next attempt. Hopefully there’s nothing wrong with the engine itself. They didn’t see this problem in the test firing a few days ago. But I wonder if there’s something about the geometry that causes the center engine to be a little higher pressure than the outer ones. If I were them, I’d be going back and looking at the pressures from previous flights and tests. If that’s the case, then the solution to this problem might be to just allow a slightly higher pressure on it.
[Update a couple minutes later]
Here’s the story from Spaceflight Now. Looks like if they have another scrub on Tuesday, they won’t have to wait another three days — they can try on Wednesday. If they launch Tuesday, that means a docking attempt on Friday, right in the middle of the ISDC.