I'm not saying George is an idiot, his defensive positioning is very good and yes his tackle rate is also top but he does get pinged for stupid penalties quite a bit when things aren't going his way. For me, you don't get the sense that George has a certain area "closed and bolted" as you say but that he's going to do his job in a solid manner. I loved watching Thorne myself cause you're right, you'd get the sense that no one is getting past him.