He apologized to Cena when they were shaking hands, but I don't know who's fault that botch was.
Cause they called it a belly to back suplex, but I assume he was trying to do the exploder suplex like he did on AJ at Money in the Bank. That definitely involves the person taking it rotating a lot on their own, especially when the person taking it is bigger than the person giving the move. Nakamura definitely felt like it was his fault and it probably mostly is, but those moves require both parties to do their part.
Edit: Looks like it continued into 205 live and Cena looks to be potentially fueding with Corbin for summerslam