Philco3, you are making an assumption, that the 71% made a fast, emotional and intuitive decision.  
I cannot speak for others but a few problems I have with Omar.
- the Americans gave the compound 30 minutes notice they were going to attack.  Women and children left, Omar decided to stay and his father wasn't in the compound therefore I do not consider Omar a child soldier under the influence of his father.
- Omar spent less than 48 months of his first 16 years in Canada.  Omar's father was not an expat going around the world for his job.  i.e. Omar is a Canadian on a technicality.
- A reasonable person would recognize that once Omar spoke to his lawyer anything Omar says has has been influenced by his lawyer.  Examples include: Guantanamo Omar told his brother stick to the story; or that he supported his family and their views.  After meeting his lawyer the statements changed.  
- The USA was still trying to locate Bin Laden and Omar had a connection.
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Anyway not a slam dunk.