CVS from Tuesday:

Ejb3AnnotationHandler.java, line 278:

protected void populateBaseInfo() throws Exception
{
String ejbName = null;
ejbClass = di.getClassLoader().loadClass(className);

This uses the classloader of the DeploymentUnit,which is not the classloader I've been setting with Bootstrap.getInstance().setLoader(myClassLoader). Looks like there is a bug in the classloader handling that binds Embedded JBoss to Thread.... getContextClassLoader().