TV Line Casting News - Update
ABC declined to comment, but sources confirm that Remar will play Alex’s (Justin Chambers) estranged father.
Source:http://tvline.com/2013/08/16/greys-anatomy-james-remar-season-10-spoilers/
So I was right! He was for Alex! :) But does this now mean the person in the bar chasing the band & getting in a fight is Alex instead of Arizona? :( Theories anyone?