Still, he put up a 41 goal/95 point performance this season. Hes not paid to play defense, hes there to put the biscuit in the basket.
... and this makes it OK for him to lazily coast through the defensive zone while the rest of the team plays defense, and in doing so blow an easy opportunity to cancel what ended up being the game-winning goal for the Rangers.
Ovechkin, as with every other player on the ice on any NHL team, is there to play hockey. This was not a hockey play, and no coach on the planet would use your reason to excuse such behavior.