To me it seems to me a lot of people are confusing the definition of a cheap shot.
A cheap shot is an INTENTIONAL dirty play to try and injure someone or inflict pain. Its a conscious decision to hurt someone. If you've watched Jamaal Adams the past few years, he plays and hits hard. But he's never been a dirty player.
It was a hard hit, that unfortunately knocked Wolford out based on how he was falling forward. If you think Adams tried to intentionally hit Wolford in the head with a dirty play then you're wrong IMO. It still should have been flagged though, but calling it dirty or a cheap shot isnt what I saw.