He bends his knees and bends his waist as much as it prudent in that situation, bending it more would put him launching head-first at Stoll which is silly. He hits pretty damn level considering, this is hardly an upward hit by any stretch. We've seen what real upwards hits look like and any honest look at this one shows it's not.
And then, again, we have the end result of Stoll's head running into Torres' back. That is plain and simply unfortunately incidental contact, no one headshots people with their back.
I made my point. I can't think of any change of the wording that will make it more clear. He can go lower and avert his head so that is not a legit objection. I don't buy the excuses of "hockey" minds that have objected in the past. They let Torres pass on a clear hit to Seabrook's head when he was behind he net due to Seabrook's location on the ice. I consider that BS. They talk about the responsibility of the hittee. Again BS in my book. If you talk about auto collisions, none of these excuses would pass muster. It is a game; it is not life and death. The players are entitled to a healthy retirement and not have their health compromised by people who override the well researched evidence coming from the medical professions regarding impacts to the head.
I personally think that with hits that are on or near the head that the suspension should go along with the injuries. Just like civil law in driving. It would probably be a better motivator to issue suspensions based on injury caused and add one or two games to the amount that the other player is out for. Escalate the additional games for repeat offenders. It would be the best deterrent. I doubt any more stomping incidents would occur because you would see suspensions of a half season and more just for those.