Jetty gets a ClassLoader from JBoss
Jetty has to give Jasper (JSP container) a ClassPath.
Recreating a decent classpath from the classloader has always been problematic.
Currently Jetty just sets it to servlet.jar:j2ee.jar:jasper.jar (or something similar).
I am hoping to reach a proper solution now that Marc has checked in his ScopedClassLoader stuff, but everything is rather in flux at the moment... and I have been working on something else.
This should be sorted soon. Use your current hack for a little while longer.