It is clear, that the interview was meant as an early show of egypts major role in this swap, something that may even help the military command to stabilize its role in a time of growing criticism. Hamas speciall interest was to document, that Shalit has been treated well, whatever that can be in total isolation over years and constant fear or insecurity for his life. But doing all this before the transfer to Israel, right under the armed wing of Hamas, was not a situation that could have given Shalit the feeling of safety that is needed to be able to give honest answers, even criticise his captors.
Roadside bomb kills five border officers in western Iraq (AP)
from the article: Egyptian journalist rejects Israel's criticism of Shalit interview