I wouldn't get to caught up in all that Henson stuff at the end. Sometimes Parcells will change the down and distance during drills, and also gives them extra plays if he wants to see something specific. It's hard to follow exactly what is going on when he does that. He did question Henson about calling a time out at a specific time, but from my read on it Parcells wasn't really mad, you can tell when he's mad out there. It sounded like he was trying to get a read on Henson's thought process.
I think there is a lot more interesting information in there about Ratliff kicking butt (which he's been doing all camp) Fabini showing something in run-blocking, Rivera getting beat like a drum (scary) and various other stuff.
If you want to focus on Henson, focus on the fact that he threw the best "touch" pass I've seen him throw all camp. He usually doesn't show that kind of feel for dropping a ball in over the linebackers.