Malaysia has a large Chinese population which is dominant in the business, generally well to do.
Would a native Malaysian Muslim (the co-pilot) be fanatically sympathetic to the (perceived) plight Chinese Muslims? That might simply depend what Mosque he happened to attend and whom there he fell in with.
Check this out, here it says his wife & 3 kids moved out day before flight: http://www.mirror.co.uk/news/world-news/missing-malaysian-airlines-fears-over-3247649