It might have just been precautionary, if this was the PP:"
"Simon Despres was playing a puck in his skates when Byers came over the middle and trucked him. Looked to me to be a Tito Santana-style forearm to the head. Philip Samuelsson jumped Byers. Brian Gibbons joined the fray. Despres got up, skated off on his own and shortly thereafter, returned to the game. Byers got a charging major and Samuelsson the old 2-5-10 for instigating. In 1993, it would have been a highlight-reel hit for Byers. In 2013, it a major and maybe even a short suspension."
From what I know, Despres is playing top minutes with Samuelsson against the opposition's top lines, and doing well. Not sure about his role on the PP. But he's 2nd in points for dmen behind Mikkelson.