You can try do it by following these steps:
- create your BlogRepository class by inheriting the MonoX BlogRepository
- override the GetBlogPosts method in BlogRepository and set the sorter as you wish
- create your BlogPostList control by inheriting the MonoX BlogPostList control
- override the BindData method in BlogPostList and call your BlogRepository -> GetBlogPosts method to fetch the blog posts
- create your BlogContainer control by inheriting the MonoX BlogPostList and change in the mark-up MonoX BlogPostList control your BlogPostList control
- go to Blog page and change the MonoX BlogContainer control with your BlogContainer control
Let me know is this approach suits you.