The o-line did it's job. There is no penetration from that 3 man rush. It might not be a wrap around pocket, but it doesn't need to be because that was some good blocking. Though it should be with just 3 guys rushing. Tanner doesn't see the field. I honestly don't know what you are talking about. He had time, protection and no reason to roll out. He didn't even try to read the defense or look to the left.