Intermittent NoClassDefFoundError upon deploying/undeploying with WildFly Maven Plugin

[mjurc@tigris greeter]$ mvn wildfly:undeploy
[INFO] Scanning for projects...
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building JBoss EAP Quickstart: greeter 7.1.0.Alpha
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- wildfly-maven-plugin:1.2.0.Alpha2:undeploy (default-cli) @ greeter ---
Mar 14, 2017 12:40:39 PM org.xnio.Xnio <clinit>
INFO: XNIO version 3.5.0.Beta1
Mar 14, 2017 12:40:39 PM org.xnio.nio.NioXnio <clinit>
INFO: XNIO NIO Implementation Version 3.5.0.Beta1
Mar 14, 2017 12:40:39 PM org.jboss.remoting3.EndpointImpl <clinit>
INFO: JBoss Remoting version 5.0.0.Beta16
Mar 14, 2017 12:40:39 PM org.wildfly.security.Version <clinit>
INFO: ELY00001: WildFly Elytron version 1.1.0.Beta23
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.285 s
[INFO] Finished at: 2017-03-14T12:40:39+01:00
[INFO] Final Memory: 21M/301M
[INFO] ------------------------------------------------------------------------
Exception in thread "Remoting "management-client" task-8" java.lang.NoClassDefFoundError: org/xnio/XnioWorker$2
	at org.xnio.XnioWorker.shutDownTaskPool(XnioWorker.java:769)
	at org.xnio.nio.NioXnioWorker.shutdown(NioXnioWorker.java:277)
	at org.jboss.remoting3.EndpointImpl.finishPhase1(EndpointImpl.java:257)
	at org.jboss.remoting3.EndpointImpl.closeTick1(EndpointImpl.java:240)
	at org.jboss.remoting3.EndpointImpl.access$200(EndpointImpl.java:93)
	at org.jboss.remoting3.EndpointImpl$TrackingExecutor.finishWork(EndpointImpl.java:820)
	at org.jboss.remoting3.EndpointImpl$TrackingExecutor.lambda$execute$0(EndpointImpl.java:807)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.ClassNotFoundException: org.xnio.XnioWorker$2
	at org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass(SelfFirstStrategy.java:50)
	at org.codehaus.plexus.classworlds.realm.ClassRealm.unsynchronizedLoadClass(ClassRealm.java:271)
	at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:247)
	at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:239)
	... 10 more