Controversial NO-GOAL sends Oilers-Flames Game 5 to Overtime

With the score tied 4-4 and time winding down, Flames Mikael Backlund made a rush to the net and a nice play to get a shot on net. The puck would slip through the Oilers goalie Mike Smith's arm, and as it was going in, the puck goes in off Blake Coleman's skate when it was already going in.

After review, the referees deemed that it was a kicking motion, and the goal was disallowed, sending game five to overtime. Watch the play here:

Coleman is in a battle with Oilers defenseman Cody Ceci, and it's hard to tell if he kicks it intentionally or not. Not sure how the officials made that tough of a call. No matter what you call it, someone is not going to like it.

Here's another angle:

What are your thoughts?