How to stop multiple instances on same server in jboss-7.1.1 final? -- Is this the same problem you posted earlier??
I thing is bothering me, why do you need to have 10 different standalone folder in same jboss / on same machine.
If you really want multiple jboss instances(servers) to run using different ports on the same machine, a much cleaner way to do it is using domain mode and off course in that case managing the servers is pretty easy, though same jboss-cli client using single logging.
BTW the ":shutdown" also does kill the processes, as far as i know.