Liefeld is claiming editorial interference and that no one really has a clue how to run the DCnU. This is nothing unusual. Several other industry pros, including Gail Simone (who walked off Firestorm), George Perez (who walked off Action Comics), and others have been implying the same thing. What makes Liefeld's complaints different is that the man who has no filter between his mouth and his brain is telling a LOT of tales out of school on Twitter. Not only a story about how he basically extorted money owed from Marvel over Heroes Reborn, but lots of other shots at current DC management.
Liefeld claims he's working on a book about his time in the comics industry (I quote the Hitch-hiker's Guide To The Galaxy -- "I write novels!" "He writes 'em in crayon!") and how the Image chapter was going to be the biggest, but now his tenure at DC will be.
A person on Twitter wrote to Marvel editor Tom Breevort, "now that rob lieffeld had left dc, can we get him back at marvel? would love to see him back on x-force or deadpool!!" (sic).
Breevort's response? "After that Twitter flame-out, I can't say I'd be in a hurry to get onto that train."
What do you know? Breevort and I actually agree on something!