ClassCastException: test.RailIDResolver cannot be cast to com.sun.xml.bind.IDResolver after applying EAP 7.2 CP7

Issue

• ClassCastException: test.RailIDResolver cannot be cast to com.sun.xml.bind.IDResolver after applying EAP 7.2 CP7

java.lang.ClassCastException: test.RailIDResolver cannot be cast to com.sun.xml.bind.IDResolver
    at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.setProperty(UnmarshallerImpl.java:473)
    at test.BackingBean.getUnmarshaller(BackingBean.java:93)
    at test.BackingBean.unmarshaller(BackingBean.java:46) 

• After applying patch JBoss 7.2 CP7, our application uses package JAXB from the JBoss libraries in stead of from our own war-file