I do feel sad about you son's plight, his sudden homelessness is one part of it. For you to parade your son as your sympathy-getting poster child is reprehensible to me.
Perhaps the boy can go stay with his father or paternal grandparents, or any of his extended paternal family? 
Yes, I feel extremely sad for the plight of children whose adults make poor choices that have negative consequences on the childrens' well being.