If Iger actually had the ability to think on his feet, Iger should have said something along the lines of
'I refuse to dignify the lies and innuendo's spread by rumor mongers who wish to see this project tarnished'.
With what Iger said it gives credence to the possibility that corruption and graft were integral to the project
Iger is The Peter Principle personified.
Yup. This is exactly how you answer the question. He just can't think on his feet and not answer a question that Zenia hasn't scripted an answer for. He was probably shocked because no American reporter would dare ask what is a fair question (again, depending on how it was worded).