once he is out of bounds, there should be no contact. Instead, the defender has both arms on Rising, at least a yard beyond the sideline. Rising continues forward into a cooler. Rising was not diving to get out of the way, he was not falling and his momentum wouldn't carry him that far.

We can disagree. It's not blatantly push...but it's not a clean play either. I agree with the commentator, should've been a flag.