Not mentioned here, but give Trotter credit.
GB recovered the opening kickoff fumble. Trotter gets his arm in on the initial fumble to make it competitive, but there is a clear shot of the GB guy with the ball in his arms, and only him. Somehow Trotter got the ball from him.
I have no idea how they missed it on the review, it looked clear to me. Just another reason for players to NEVER give up in those piles. Normally it is lineman that get the ball away from people, but somehow our undersized backup LB with a HUGE family name and heart ended up with the ball.