He purportedly is the "inventor" of the RPO. He was running it 20 years ago. His JUCO teams pretty much ran the O that Pruitt wants. He was my vote for OC in the beginning if we were going to promote from the staff. I think he would have made a good one.
JMO
Edit: I should say what is considered the RPO. The actual run pass option has been around for a zillion years. IMO the Veer (Think Bobby Bowden and WVU) is a form of the RPO with 2 backs instead of one.
Veer is the earliest I remember. We ran it in HS with a guy named Freddie Smith......To take your assessment a little further: to me the single wing is the true run pass option.