I'm not going to argue Ultimate Iron Man isn't a dick, but in this case I have to play devil's advocate.
From what I'm reading here, it seems like Harry was truly there on his own or Fury hadn't told any of the other Ultimates about it. It's possible he either didn't hear Norman about to break, or believed he was making a ruse (and if the Ultimate version's anything like the 616 version, he would have definately used it as a ruse).
So which comic is this? It sounds like it's a Spidey-centric arc, but it's clearly not drawn by Bagley.