Re: confused!!!
I think that has to do with the law which needs to observed. No argument there.
He left the country. Somehow he produced the travel document of the girl while traveling. Most likely the passport. Somehow he was let go.
The information you provided is not enough to say anything about if he did something wrong or right. Maybe his ex-wife does not want to pursue the case.
Complete information is not known about the case at the moment.
You better be sure you are not being involved in something which has nothing wrong.
I don’t think the discussion should be about religion here. Who is muslim who is not really does not matter. Right? 
Regardless of a man be a muslim or not, the man is better protector of his daughter. Not saying the ideal/perfect always, but better.