Warden’s death

I don't think Norton garnered any sympathy from anyone. I didn't see this in the theater but I wouldn't doubt if people cheered when he offed himself.

Still, I was always a bit surprised that Norton killed himself as quickly as he did given the very short time between realizing the federales were on him and the time he pulled the trigger. Maybe a longer scene where Norton saw them coming and tried to hide. Having him being chased through the prison before eventually being cornered, like in the laundry for instance, would have been exciting, but I guess the film was long enough already.

Didn't he surrender without resistance in the book?

As for me I personally would rather see him get arrested and given a taste of his own medicine once he becomes a convict.

At least Hadley had the decency to surrender without incident.