Believe strong had confidence in his defense and felt it was better to not risk an ill advised interception to set them up for points. Probably should have run a draw of something to see if they could pick up big yardage, but I understand the thinking. Similar conservative play once their QB went down and they had to abandon the pass pretty much. Basically USF missed points because of 2 turnovers and gave them points with a blocked punt. Charlie obviously had no confidence in QF ability to avoid a turnover in the end of half or late game situations.