The spread accomplished two things: 1. It covered up a pretty bad O-Line 1a. It gave Thigpen a better view of the field.
The spread has benefits, and I believe it will continue to grow due to the NFL tying the hands of the D-Backs ehhh, behind their back. The way PI and illegal contact are called is going to contribute to the spread becoming more wide-spread (no pun intended
).
When it comes to putting games away and the red zone, the spread shows it's weaknesses, though.
Thigpen will get his shot, so don't worry.