Not sure I agree with any of your observations.
1. I think we saw in NHL 10 w/ shooting from the knees and bat in goals that EA is very good at finding the right frequency for these sort of "wow" moment goals. I could certainly be wrong, but based on my experience w/ NHL 10, and the fact that I saw nothing even close to this from two days of playing NHL 11 late in May, I would say you needn't have to worry about this.
2. Warps around him? Not sure I notice what you mean. Looks like he just side steps the sprawling body and picks up the puck. Maybe could have been a bit more of an impact between Kessel and the forward who took the backhand, but not much. Nothing that really bothers me at least.
3. Both Atlanta d-men were human controlled. Red icon above the guy who throws the hit, and blue icon about the guy who skates away. Only Thrashers players in the clip who weren't human controlled was the goalie and the guy who made a break towards the Leafs' player who took the backhander.
With all that said, the puck physics are a bit off there but I think it's still an awesome clip. Since 110% realistic isn't possible on this generation of hardware, I think everything from the original hit to the blocker save to Kessel swinging from his back on the ice to the actual "collision" between the puck mid-air and stick itself are all awesome examples of the tech driving this year's game, and of a really cool hockey play. Then of course the fact that it's waived off and reviewed is just icing on the cake.
Basically everything good about that play far outweighs anything negative imo.