We noted yesterday that Ryback tweeted (and deleted) that he would be out for a while because he hasn't been himself lately. He also included "sorry punk" in his tweet that many took as a reference to CM Punk. A couple of years ago Ryback was supposed to put Punk through a table but the spot was botched and Punk hit the floor instead. Some people think that he was just making fun of Punk. PWInsider says that he's not expected to take any time off and their source believes he's not really injured.
However, Michael Cole noted last night on WWE Main Event that Ryback was injured and would be out for a few weeks.