There is nothing he can do about his family and it would be unfair to blame him for their actions. 
Hopefully Harper, Scheer and friends  will move on to a new scapegoat and let him get on with his life. 
Meantime, how about listening to  Romeo Dallaire  or Scott Taylor,you know .gentlemen who know what they are talking about.
http://espritdecorps.ca/on-target-4/on-target-khadr-was-a-victim-not-a-terrorist