No, no cloudy vision at all. Could he have walked away, yes. I'm not disputing that.. yes, it could have all been avoided. Yes, Posada could have been the bigger man, but he wasnt.
You also said he ran to where he did out of instinct.. he was well aware of where he ran to. He antagonized him... its THAT simple.
Posada had time to cool down, yeah.. but when you have someone come back pushing your buttons you'll get hot headed all over again.
And yeah, he prolly knew he was coming, OBVIOUSLY.. so WHY would he purposely stand inbetween the yankees dug out and home plate?