[Nita Nupress]

Glad Robo talked the producers into keeping him alive..

Did he just sign a new contract or something?

[COEXERJ145]

No, he was supposed to die in episode 5.12 or 5.13. Instead Peter Weller and Carlos Bernard thought up the Henderson kills Tony storyline and the producers liked it so much they went along with it.

That is how they turned Henderson into "the most hated villain ever on 24".

[Aaron0617]

Glad Robo talked the producers into keeping him alive..
Did he just sign a new contract or something?

I did read that Carlos Bernard (Tony Almeida) asked the producers to keep him alive for a couple extra episodes. Maybe this was a simular request.