I was able to resolve the above issues with some JBoss-Modules magic:
1. Add "Dependencies: org.jboss.ws.cxf.jbossws-cxf-client services export, org.apache.xmlbeans services export" line to MANIFEST.MF of the war
2. Add a dependency line for "javax.api" in the org/apache/xmlbeans/main/module.xml
3. Modify the org.apache.cxf module.xml file to add dependency on xmlbeans
--
Weiqi