This video from a plane shows how far offshore it was: https://twitter.com/flying_briann/status/1070392207696453632
And Elon's tweet with SpaceX's video from the booster itself: https://twitter.com/elonmusk/status/1070399755526656000
I seem to recall that the Block 5 is targeting >10 reuses so even if they flub 1 in 20 landings going forward that's far from the end of the world in ROI terms.
It may not meet the technical definition of an "explosion", but the fact that it's still intact here is a testament to how "soft" this hard landing was.
The most dangerous time for a can of gasoline is when it's just been emptied- because it's actually full, just of air and gasoline vapor. It's a bomb at that point if you aren't careful. Rockets? Similar problems.
Watch what happened a few years ago when another Falcon 9 fell over because of a faulty landing leg: https://www.youtube.com/watch?v=xr7GcpFGWd0
Nonetheless, an empty rocket is still dangerous.
The issue is apparently with the hydraulics system of the grid fins that had a problem. It was nice to see that the gimballing engines recovered the spin before the sea landing.
I understand for "marketing" reasons why they stopped the video feed from the first stage but since there wasn't any danger to humans here I was disappointed that they cut away from that and pretty much went into the damage control speak of "the primary mission is going well."
Engines stabilized rocket spin just in time, enabling an intact landing in water! Ships en route to rescue Falcon.
I'm a little disappointed too, but it was probably the right call by them to cut the feed.
Can't say they don't have a sense of humor about it.
Perhaps some mod can fix the typos in the title?
They aren't clear about whether it was an accident that they ended up in the water or was it by design. They could have planned ahead for this situation, if they detect that they have a problem and can't do a normal safe landing (the out of control spin) and then they could send it for a 'safe' and hopefully controlled water landing like they did. Or it could just be that it was way off course because they couldn't control it and it was just luck.