There were live reports from Tuesday’s SmackDown tapings that Ryback may have been injured during his match with Kane. Big Show interfered and attacked Ryback. Referees threw up the “X” sign and Ryback was helped to the back.
Update (via ProWrestling.net): After the taping, Big Show came out and joined Seth Rollins in beating up Dean Ambrose. Ryback was out next to help, followed by Roman Reigns. All three babyfaces hit their finishers to end the show. Hopefully Ryback’s ‘injury’ was a work or a false alarm.