As with the first failure (insufficient hydraulic fluid in the total-loss system), at least there's a nice clear reason why this one went wrong - the landing leg wasn't properly locked in position. You can see it neatly folding back up as the rocket topples over.
I suppose technically it counts as a successful landing followed by the rocket falling over, so Just Read The Instructions remains the only object to have been bombed from space twice, rather than three times.
The second stage went on to successfully deploy the payload, which is the important thing (albeit with a less exciting Kerbal:Thunderbirds ratio).