I read that Young threw the pick, Haynesworth said something coming off the field and Young shoved him (or something to that effect). Then Young took a seat on the defensive bench (away from the other offensive players), put his head in his hands and completely ignored all the players and coaches that came over to talk to him. This continued for quite a while. Collins came in until some point in the 4th Qtr. when Young returned and got injured.
That's what I read. Didn't actually see it.
EDIT: Added the full text of the Titans fan's post: