I have children to enroll next year ( thank goodness) but should I just convice my husband to go back home where the children are safe?

Yes...that would be a very good idea. The quality of education that your children would receive in a western country should be leaps and bounds better than that of places in Asia. As for contracts not being abided by I can assure you that the crappy outfits in Asia would not be better than that of Eastern Europe. I have not heard of Eastern European outfits murdering expat teachers for ratting on shady business practices, nor have I heard of passports of foreign teachers being wrongfully used by their Eastern European employers to import cars. Both have happened in China.