Can I look up an EJB via JNDI and invoke methods using reflection?

I'm using EJB 3.1. I need to get a references to one of the EJBs in a servlet and I'd rather not put an EJB interface jar on the class path to get the code to compile.

Is it possible to look an EJB via JNDI and find the method I want to invoke using reflection without ever strongly typing the object to an interface?