In the first one, at the end of a battle, Tony is hanging around a sort of mechanical monster which is supposedly K.O. but, unexpectedly, it surges up and impales him.
My memory of the second one is really blurry - I think there was a high-speed collision between a helicopter and the Iron Man armor. There might have been some hostages or bystanders involved.
I'd be very grateful to anyone who could help me find these again!