Thats what they did last week, if I recall. 3rd & 1 and they didn't pick it up, but they knew that they would go for it anyway on 4th & 1.
The play was already called and it ended with the 48yd pass to Gray.
The 3rd down play was a run, but why not try the same type of play here? Go into 3rd down with a plan for 4th.