Just looked at it again,
Evan has the puck in front of the net, he turns to his left, falls down, with his left knee bent his left foot looks like it's under his right knee, then his upper body falls as he's shooting the puck, he rolls onto his back, looks like his foot is hung up under him for a split second, rolls onto his back, the frame is fussy but it looks like his left leg isn't moving with him, he rolls onto his stomach, lets go of the stick, gets on his kees and pushing off with his right foot crawls to the bench. On the bench, he's rubbing his left lower leg.