Honestly, I don't know which of the two penalties was more ridiculous. On the first one the puck is coming around the boards and he is moving toward the puck to receive it. I am not aware of any NHL rule that requires a player to get out of the way in order that another player can take his place. If Subban were in the high slot moving toward the net to take a pass for a one timer, and his checker were behind him and kind of blocked off from the puck, would he be called for interference there too? No rule was broken.
On the second play, Subban is almost completely immobile, if not completely. The checker initiates contact because he wanted to take an angle of attack on the puck that called for him to occupy the ice that Subban was standing on. The player projects Subban to the ice. That was properly either an Anaheim penalty or a non-call, depending on whether the ref feels that the Duck hit him on purpose or accidentally, and whether the hit was hard enough to be punishable, or if Subban merely lost his balance from a glancing blow. But penalizing a player who did not actively create a moving pick? Another case of no rule being broken. The fact that the call came not from the official nearby but by the one 125 feet away made the team of refs look even more ridiculous.
It looked to me like after Boudreau whined considerably about the interference call against the Ducks on Weise, the refs were trying to make up it, but in no way was that call similar to either call on Subban. Weise had just hit two puck-carrying Ducks CLEANLY, the Ducks felt it was retaliatory for the possibly suspension-worthy hit on Pacioretty and someone went after him. You can't do that. Weise's hits were clean, and retaliation on a guy nowhere near the puck is interference, pure and simple. It was intentional, and it needed to be called to keep the game under control as well. Did Weise go down a bit easy? Maybe, but when you are not carrying the puck, your body is not braced for a hit the same was as when you are. It can take you by surprise and as a result it is not unusual for you to be unable to stay on your feet. They are playing on ice, let's not forget. Ice is slippery!