<jboss-web>
<class-loading java2classloadingcompliance="false">
<loader-repository>
org.terracotta:archive=all-in-one.war
<loader-repository-config>
java2ParentDelegation=false
</loader-repository-config>
</loader-repository>
</class-loading>
</jboss-web>
Substitute "org.terracotta" for your package name and "all-in-one.war" for your WAR