He signaled for a fair catch on the kickoff, the ball bounced in front of him at the Wake Forest 5 or 6 yard line, and he ran up to grab the ball at the Wake Forest 3 and tried to return it from there.
(I presume he was possibly worried that the ball wouldn’t make it into the endzone for the touchback?)
By rule, the referees stopped the play and said that his action downed the ball at the Wake Forest 3, where the offense started. The way the announcers were describing it afterward, it sounded like a pretty big mistake at the time.