I guess it comes down to semantics at some point. He was contacted in the head, yes, but he also stopped skating and fell down, arms spread, already pleading to the refs for a penalty. In my book that's a dive, and it's disappointing to see a Wings player doing that.
He didn't dive. Sorry.
Watching the replay a few times, you can clearly see the delay between when Abby gets hit, and when he throws his arms up over his head. Not sure why you'd do that when you get in the head, unless it was to make it look worse than it was.
The natural reaction is to grab your head, or at least try and keep skating, if you're interested in playing hockey and not diving.