It's not a mid-line; that's a regular TO play where the QB reads the DE and turns the play up inside. On a mid-line, the play side guard wouldn't be drive blocking; he would be releasing to the second level and looking to execute a seal block on the weakside outside linebacker or strong safety.
I didn't think it was a midline either. That's why I was asking @Longestday why he thought it was. He and I had talked about that play before. I think it's a planned QB keeper off the triple option motion.
Three things indicate to me that it wasn't a true triple option either. One, I don't think it was a real mesh with Laskey who looked to be going up to block. If it was a true triple option, then the correct read would have been to give to Laskey since PSDE Tyler Stargel didn't take the dive. Tyler looks like he's expecting the typical outside triple option route from TB who cuts it up. Two, the PSAB (Days) doesn't go out to cut or drive a corner or safety. Rather, he goes straight up and seal-blocks the LB (Nealy, I think). Three, the OL seems to be drive blocking, the backside guys aren't scoop/cut blocking and the PS tackle down blocks the crashing DB but looks like would be drive blocking the DT regardless. In other words, the PSOT is not trying to get up to the next level to seal block as he would in a typical triple option.
So, I think this was a called QB keeper that just expects him to be able to beat the unblocked DE. The DE will typically take himself out of the play by tackling the B-Back, but if he chooses to take the QB, playing it the way Stargell played it makes sense. It's a good play. I think we ran it a lot in the Spring game with Griffin.
If I'm right, it's the same play that the 2009 GT-VPI announcer called the Quarterback Lead: 1:00:28