From the angle I had on the play that Peek and Norris got into a fight, it looked like Peek had a very nice rush which Norris had largely contained and then a dispute arose because Norris held onto the play longer and rode Peek to the ground. aj had a much better/closer view so maybe he can provide more insight on the play. From my point of view, looked like a good play by both players with a dispute over the finish.
Now, not fair at all to judge a player by one play, but nonetheless--Norris was very solid against Peek on the fight play, the next turn for Peek was against Baxter and Peek treated him like a rag doll.
Funny play later in the practice, Peek tried an outside fake and then spun to go between the LT and LG just as both came together--Peek was definitely the pedestrian caught between two cars in a collision. Actually looked like a solid move by Peek, he just got caught between two far larger objects hitting each other.
The Art of War