What a bunch of ridiculous crap. I have no problem whatsoever with LoDuca flipping his bat after hitting the third of back-to-back-to-back homers to take the lead. If a pitcher gives up three homeruns in a row at any point in a game, he shouldn't be talking to the media about anything other than what he needs to do to make sure that never happens again.
That being said, however, I also have no problem with Hamels going upside LoDuca's head the next time the face eachother. If you are going to watch your homers and flip bats, then you should exptect to get nailed the next time you face that pitcher.
The only thing I do have a problem with in this situation is Hamels talking about what he will do next time to a reporter, then the media acting like it's somehow newsworthy that players get upset when someone breaks one of the stupid unwritten rules of baseball.