Unlike the spineless Indian Government, which bends over backwards to accomodate the terrorists, the West has no such compulsions. If they have picked up a person for alleged terrorist activities, rest assured there is something which this person is hiding. And considering the strong human rights activism existing in those countries, no government will dare to pick up a person from the street and brand him a terrorist. So If australian govt has arrested haneef, there must be something to it. Let us wait for the reports to come in.
Another thing. Even a murderer who has been caught and proven guilty, his family will continue to say he is innocent. So let us not give much credibility to what the family says. For them haneef and the likes will always be innocent.