I was with a friend of the driver in question who rang him when he heard of the incident, to see if he was OK. The drivers words "I cocked up" and forgot to put the gear down. Yes, he was sacked.
I would be unhappy if someone did that to my aeroplane, but I don't think I would automatically sack him - depending on the circumstances I might ask some pretty pointed questions and require some remediation; dismissal for human error is a bit stiff.
I haven't done it yet, and do not plan to. Everytime something like this happens, we should use it as an education process for ourselves, no? Who else (apart from me) has become super sensitive about the dangers of dark night approaches since the Mt Gambier CFIT? Live and learn - "You have to learn from others mistakes; you will never live long enough to make them all yourself".