Edit the conf/xmdesc/org.jboss.deployment.MainDeployer-xmbean.xml descriptor and set the CopyFiles value to false:

[code]
<attribute access='read-write' setMethod='setCopyFiles' getMethod='getCopyFiles'>
<description></description>
<name>CopyFiles</name>
<type>boolean</type>
<descriptors>
<value value="false"/>
</descriptors>
</attribute>
[/code]

After this, there will still be some rars that are getting copied when they should not, but its a fraction of what was copied before:

[starksm@banshee9100 tmp]$ ls -R
.:
aopdynclasses/ deploy/

./aopdynclasses:

./deploy:
deploy/

./deploy/deploy:
jboss-local-jdbc.rar-contents/ jms/
jboss-xa-jdbc.rar-contents/ mail-ra.rar-contents/

./deploy/deploy/jboss-local-jdbc.rar-contents:
jboss-local-jdbc.jar*

./deploy/deploy/jboss-xa-jdbc.rar-contents:
jboss-xa-jdbc.jar*

./deploy/deploy/jms:
jms-ra.rar-contents/

./deploy/deploy/jms/jms-ra.rar-contents:
jms-ra.jar*

./deploy/deploy/mail-ra.rar-contents:
mail-ra.jar*