Who is the dirty Flyer...?

After Malkin's first initial rush (4 min. into the game) where he split the D but did not score (you can see it on Dobber's highlights in todays ramblimgs), the puck goes to the side boards and a Penguin is skating to the puck and out of nowhere a Flyer dives along the ice making no attempt to play the puck and takes out the Penguin player. I saw this live and it made me sick.
Who is this dirty Flyer player? I just want to know to see if it was a normal dirty player or someone else on the team that now has no standards or hockey etiquette.