I have absolutely no love for A-Roid or the Yankees, but it was bullshit Dempster wasn't tossed after hitting him. I agree with whoever said that he should have just walked the bases and stared down Dempster after that homer.
Unless it's done as retaliation for one of your guys getting beaned, intentionally hitting a batter is a bush league move. 10x more for AL pitchers since they don't have to put their ass on the line.