Collection plugin excludes com.sun..*
Spring Insight provides a collection plugin called insight-collection-x.x.x.RELEASE.jar. Within this plugin there is an aop.xml and it has an exclusion for com.sun..* This exclusion get's applied to all plugins and therefore means my plugin's aspects are unable to be woven to any JSF classes which are in the com.sun.jsf package. There is already a caveat for com.sun.mail so either one needs to be added for com.sun.faces or the exclusion needs to be less general. It's only there because of Sun XML parser classes according to the comment.
<exclude within="com.sun..* AND (!com.sun.mail..*) AND (!com.sun.faces..*)"/>