Wow, where to begin? Your question leaves me wondering 1000 things, and without knowing the answers to those it makes it difficult to answer your question.
The simple answer: restart JBoss AS.
Some of the questions that come to mind:
1) What OS is JBoss AS running on? (I assume a flavor of Windows because you mentioned "remote desktop")
2) Is JBoss AS configured to start as a service, or is it being run from a command line? Of did you start if from Eclipse (see next question)
3) You mention JBoss AS and Eclipse Helios in the same sentence. Are both of those running in the system into which you are remote desktoped, or are they on different systems?
See this: AvoidRedHerrings (I suspect that Eclipse is a red herring, but I don't know)