See, I don't think he has the puck at that point, which makes the hook incidental and not a factor in what happened on the play. I think the original reach knocks the puck off of the stick and towards the skates of the other d-man as he's crossing the blue line (before the stick gets into the body at all) then it happens to get tangled up as Wahlberg skates through it, which makes it look way worse than it was (and the angle involved makes it seem like it affected the play when it may not have)
Again, I'd like a better angle, but if the puck is already off his stick before the stick gets up into his midsection - I don't think it gets called even if he falls (or in the 1st or 2nd period, even)