Yeah, I think the only people who knew that puck went in are Myers and the fans behind the net.
Sportsnet Article - with video.
Notice that a couple of minutes of game time pass even before the commentators see the overhead replay that shows it was in.
As it happened, no one on the ice reacts as if they thought it was even close to being in. I really suspect Myers saw it in, but he does a good job of not showing anything.