Marking the daemon flag to true will allow the VM to exit upon server shutdown. Alternatively, remove it upon undeploy.

"SubscriptionWatchDog" prio=1 tid=0x0000000041809c60 nid=0x33f waiting on condition [0x00007f723d587000..0x00007f723d587a70]
at java.lang.Thread.sleep(Native Method)
at org.jboss.ws.extensions.eventing.mgmt.SubscriptionManager$WatchDog.run(SubscriptionManager.java:653)
at java.lang.Thread.run(Thread.java:595)