kurt ludwigsen fired by nyack college in march after allegations surfaced .
police say he kissed , fondled and was inappropriate towards 13 players .
ludwigsen charged with forcible touching , harassment and sexual abuse .
the 43-year-old father of two is being held on $ 15,000 bail after arrest .
would have been coach 's first season at nyack , a christian school in ny .
ludwigsen , a career softball coach , lives in ridgewood , new jersey .