Depending on the school. Some do get in touch with your recommender and ask for clarifications or follow-up questions. It's generally acceptable to ask them to write something in their native language and then get help on translating the write-up. Good luck!
It's a big risk you're taking, if you were to write everything on your own without going through the recommender. I don't think it's worth it, especially if you have a good shoot at getting in.