He got a second concussion when Avery "unintentionally" fell on his head
He also took a shot from Jagr on the mask in the same game, another possible source of his "2nd concussion," similar to what happened to Mike Richter in 2002. DiPietro also had a concussion in 2005. Bottom line is, Nolan and Snow rushed him back to action prematurely. I can understand that from a team standpoint in that he is vital to the Islanders making the playoffs. However, it was risky and probably not prudent and not in DiPietro's best interest. I know it's vogue for Islander fans to hate on Avery. Don't blame Avery. He may not have been the cause. DiPietro should not have been playing. Blame Snow and Nolan. Blame Snow for signing his college buddy Mike Dunham as the backup. If the Islanders had a solid backup goalie, DiPietro could have rested longer. The Rangers are in the same boat with Lundqvist. If he goes down, they're screwed, unless Sather has the gonads to bring up Montoya as the backup. With Weekes or Valiquette as the backup, the Rangers are weak in that area as well.
Note the word "speculation" in the article. But don't let your hatred get in the way. By the way, you watched the game and saw Avery intentionally land on DiPietro's head? He wasn't knocked down or pushed? Watch again. I have the game on tape.