Well, the government now seems to have revealed its information on Haneef – dispelling completely the nonesense that it was secret and sensitive, as Haneef's lawyer has pointed out.
Here is the story: Haneef was warned that his brothers had been arrested and that he should therefore return to India, precisely because the Australians might arrest him for guilt by association. His decision to leave suddenly for India, has been taken as an indication of his guilt, rather than what it is, a reasonable concern that the Australian government will act to detain the relatives of
Here's the scenario: Haneef is linked to his brothers Haneef in England via the fact that when he last saw them, he left them with his British SIM card. Given that they are being detained for terrorism offences, it is reasonable to suppose that Haneef might be taken into custody in Australia. His natural response is to seek refuge in his home country, where the same levels of racist persecution of Muslims and suspension of habeas corpus do not apply. Discussions with his family of such matters are taken to imply Haneef's guilt by the Australian government, eventhough they would never stand up in court, so Hanif is barred from Australia by executive fiat.