You would not initiate a GA for a hard landing. If there is any chance of the aircraft being damaged, you would not want to take it back into the air. The only reason for a GA after touch down would be a suddenly blocked runway.This has happened on a handfull of occasions, and at least one did not end well.( seriously difficult situation for the crew if it happens)
If you initiate a GA below 50/100 ft, there is a high probability that the aircraft will touch before it goes up, even from a stable 3 degree approach. Add windshear /turbulence to the equation, that probability increases. As i said, pure speculation, but that is probably what happened here.