In the past week, controversial artist/writer Rob Leifeld, who had been working on Deathstroke, Grifter and Savage Hawkman, officially quit DC citing creative issues he was having with his editors. He then openly criticized some major players at DC and Marvel including Batman writer Scott Snyder and the Senior VP of Publishing at Marvel Tom Brevoort; even going as far as calling associate editor Brian Smith a “little bitch” and a “big dick.” Leifeld has now been dubbed the “Charlie Sheen of comics” after he publicly asserted that Marvel VP Tom Brevoort is a “loser fat ass” on Twitter.…