Iron Man was almost as shocked as Magneto was by her appearance, not expecting Fury to acquiesce or her to be looking so exhausted, coming from outside of the battle. Security cameras were not designed to pick up on those sort of details. He was a little more prepared to recover, though, and dropped the arm he had raised to blast Magneto back the way he had come to catch himself from a dead drop down to the deck, then dart towards Fury and Wanda.
"Tradsies," he said in a rush, shoving Pietro towards Fury and snatching Wanda. At least Magneto's reaction had assured him that this should work. He commanded Fury with just a finger pointing down as he took to the air again, dragging Wanda with him, pinned to his chest, then swung around to hit Magneto with a repulsor blast, anyway. "Come on, old man, you want her?"