Neither the Broncos head coach, nor any other sane person, would send their top receiver, who is 5’9” and 30 lbs lighter than Talib - AND who has had 2 recent concussions - to deliberately act as a hit man. It is just that simple.
Welker hit Taleb sideways, because he was watching the pass which was coming to his area, he was not watching Talib. He didn’t try to go low or high on Taleb and if you watch the reply, it is Taleb who gets his shoulder into Welker first.
Belichick’s accusation is just pure fantasy.
As for your analysis of the play, you are 100% wrong. Really. Please don't take this personally, but you must be looking at a different play.
Here is the play in question from a different angle:
The ball (NOT in the receiver's hands) is going in the OPPOSITE direction (to Manning's RIGHT) in the same direction the receiver was running in. Welker is a good 2-3 yards running full speed in the OPPOSITE direction. He already knew the ball was not for him, and he was lining up Talib.n He was lining up Talib before he even crossed the path of his own man and swerved downfield to avoid him.
Have you re-watched the play from a variety of angles as I have?