I am not surprised in the LEAST Fuller left the show again. I was stunned, honestly, when he opted to return after PD was cancelled. He has an overall development deal with Universal. Why would he go back to a show that'd tanked so hard over two seasons, with little chance of winning back old viewers, when he can do his own thing? I'm glad I decided long ago I was finished with Heroes. Not that any of the spoilers I've been reading about S4 have done dick to convince me to come back, anyway.