Again -- the play is dead when the ref decides it's dead. The actual blowing of the whistle is incidental, not determinative.
And that's why the call was wrong.
This isn't the operative rule in the case of a goalie mask which is damaged by a shot -- there's no "onus on the player to maintain" his equipment from being shattered by a shot.
Of course there is, just like if a player's skate blade falls off, which I saw I believe last year, maybe it was earlier this year, the guy's blade just came right off his skate and he had to hop on one leg to get to the bench. The play didn't stop for him, the onus was on him. It's no different here.
If anything the fact that he remembers it "falling" off, rather than being taken off, implies that it was basically just being held on his head by gravity.
Or maybe was talking out of his rear and didn't want to get any investigation by the league by blatantly saying he intentionally took off his helmet. It was so clear and obvious from the replay he took it off on purpose, you're grasping for straws here.
In any case, if he had wanted to prevent a goal on a harmless shot from the point he would have just caught the puck for an easy save... not flop around messing with his mask. There's no reason to think he perceived this as a particularly **** situation compared to a dozen other scoring chances that he stopped in that game.
It doesn't change the fact a goal that should've been allowed was waived off. Regardless of Ward's intentions, regardless of whether or not he saw the play or was trying to stop the play, he deliberately took off his helmet and the ref blew the play dead when he shouldn't have, and it resulted in a disallowed tying goal for the Rangers.
I'm not trying to make this a debate with regards to Ward, this debate is how the referee either didn't know the rules or deliberately disregarded them in favor of player safety. According to the rulebook, the goal should've counted due to the circumstances, unfortunately video replay wasn't used, so there was a **** call that went against crystal clear black and white rules. It's not even like the goal that went off the netting, bounced off the back and in, and the refs just missed that, the ref blew the whistle when he shouldn't have and went against the rules. Refs sometimes miss things, like a bad offsides call or blows a play dead because he can't see the puck even though it's still loose, but I don't see how the ref could've messed up that call there. I really hope the league takes a look at this.