I believe it was simply a personal foul and have stated so previously. I believed it was a personal foul for the contact above the shoulders that included head to head(in this case head to chin) regardless of the first contact. I will say however that I don't think it merits a suspension because I don't think Murray was "defenseless".
From all I've read "defenseless" means a player has no opportunity to know the hit is coming, like a receiver looking back for the ball or a passer getting blind sided.
"Defenseless" to me doesn't include blindly lolly gagging across the field because you're upset that you threw an interception.
I truly hope that Quinton has an opportunity to play in the national title game. It would be a shame if he isn't allowed to, because, as I've posted earlier, I don't think the head to head was intentional.
sip