It wasn't Kebba. It was Matt McClellan and Tommy Ahneman. Ahneman is the one in street clothes.

Shrews initially went to restrain Certa, who was turned around after ND missed the last three and started walking towards and screaming at the ref. When the ref kept walking and Certa was blocked off, Shrews ran towards the ref himself, but McLellan first, and then Ahneman next held him back. They're big boy and he wasn't going to get through them.