I had forgotten about Clay's observation in Cell. On TWD, in the search for medicine, clothes, etc. along the highway earlier on, an empty and bloody baby carrier seat was found...who's blood was all inside of that seat in the prison yard, if not Judith's? There were no other remains nearby of anyone else it could have been, someone falling over upon the seat would have left a trail where they'd perhaps been dragged away to be finished off, at the very least, like it was with Lori. I think the zombie stepping on the Governor's chess piece was definitively symbolic that it's over for him on the show. Also, in the Talking Dead interview segments, David Morrissey clearly doesn't expect to be back, either.
Bob had been shot--he could have been bleeding. Tyrese, as well (I think--have to watch it again).