The video shows Welker looking directly at Talib. It was a pick play that many teams do including the Patriots.
Oh, I know about pick plays - everybody - included the Pats - do them. But in the GIF above, I really don’t see Welker lining up anybody... except maybe at the last second before impact. Certainly wasn’t like he dove low and chopped Aqib’s knees, which is pretty much what Belichick accused him of doing.