Description of problem:
 I am getting JBWEB003011: Error allocating socket processor on server stop.

Version-Release number of selected component (if applicable):
 EAP 6.3.0.DR2 

How reproducible:
 5-10% chance

Steps to Reproduce:
I am using the domain with 4 servers and web console to reproduce it, but there may be a better reproducer than this.
 1. Start the out-of-box domain and enter the web console.
 2. Create server-one ... server four in main-server group to be able to manage all servers as server group.
 3. Start/Restart/Stop the whole server group.

Actual results:
 From time to time you get the following error message from one of the servers.
[Server:server-three] 11:41:42,380 ERROR [org.apache.tomcat.util.net] (http-localhost/127.0.0.1:8330-Acceptor) JBWEB003011: Error allocating socket processor: java.util.concurrent.RejectedExecutionException: Task org.apache.tomcat.util.net.NioEndpoint$ChannelProcessor@ccfef6f rejected from java.util.concurrent.ThreadPoolExecutor@277066fb[Terminated, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 0]
[Server:server-three] 	at java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(ThreadPoolExecutor.java:2048) [rt.jar:1.7.0_40]
[Server:server-three] 	at java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:821) [rt.jar:1.7.0_40]
[Server:server-three] 	at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1372) [rt.jar:1.7.0_40]
[Server:server-three] 	at org.apache.tomcat.util.net.NioEndpoint.processChannel(NioEndpoint.java:453) [jbossweb-7.4.0.Beta4.jar:7.4.0.Beta4]
[Server:server-three] 	at org.apache.tomcat.util.net.NioEndpoint$Acceptor.run(NioEndpoint.java:566) [jbossweb-7.4.0.Beta4.jar:7.4.0.Beta4]
[Server:server-three] 	at java.lang.Thread.run(Thread.java:724) [rt.jar:1.7.0_40]

Expected results:
 Server will stop without any error messages.