LOL. So your argument is that it WAS a clean hit but Dumba really MEANT for it to be dirty... My god this thread is now beyond absurd.
Dallas should be awarded the W. I know they didn't actually score in OT, but it
wasn't from lack of trying.
And it wasn't a late hit. He checked him less than 1/2 second after he gave up the puck.
NHL Interference Rule Explained (The Ultimate Guide) - Hockey Response
The NHL rule book states that a player may be legally hit immediately after losing possession of the puck, so this is really a discretionary call by the referee. In general, referees usually allow players to be hit up to approximately 1.5 to 2 seconds after losing possession of the puck.