If you smash the front landing gear into the ground, and the wheel is wrenched off its axle, then it's still moving at the same speed as the wreckage, and will quickly spin up to roll off only a little slower than the wreckage.
If it's not wrenched off its axle, then the energy that would have spun it up (and then some) will be dumped into the broken bearings.
Seeing rolling debris eventually overtake the bulk of the wreckage is par for the course.