The LocalOnlyContextFactory currently implements a URL content ObjectFactory for some reason:
// ObjectFactory implementation ----------------------------------
public Object getObjectInstance(Object obj,
Name name,
Context nameCtx,
Hashtable environment)
throws Exception

{ Context ctx = getInitialContext(environment); Reference ref = (Reference)obj; return ctx.lookup((String)ref.get("URL").getContent()); }

This should be in a separate URLContentObjectFactory bean