2011 OU Football - Sooners experimenting with a Thunder & Lightning package?

So as I was sitting in my office yesterday, listening to Oklahoma sports talk radio as every productive office drone does, I heard an interesting little tidbit coming out of the recent preseason practice reports.  As Carey Murdock, of SoonerScoop, was talking with Bob Barry Jr. yesterday on the OKC Sports Animal he said he had heard that fullback Trey Millard had been getting some snaps at tailback and could possibly see more time as the primary ball carrier this year.  I have to admit, it was the first I had heard of it and while I certainly don't have the inside sources that Murdock or CCMachine have I do try and keep up as much as humanly