Next time try connecting to the chassis.
Evidently he wasn't wearing a seat belt!
As soon as I saw this video it brought be back to that classic T-Rex scene in Jurassic Park.
These guys decide to ram a pool with a jeep and get an unexpected result.
Yet another reason why seat belts should be worn at all times, even when launching your jeep off a big jump.
Check out his dismount as the jeep he is driving rolls over.