Are you using revo or evo.
If revo how about setting your own TV to define if parent should be displayed or not and then using some input/output filters on the &parentRowTpl.
So for example &parentRowTpl would be
[[+hideParent:notequalto =`1`
:then=`<li[[+wf.id]][[+wf.classes]]><a href="[[+wf.link]]" title="[[+wf.title]]" [[+wf.attributes]]>[[+wf.linktext]]</a>[[+wf.wrapper]]</li>`
:else=`[[+wf.wrapper]]`]]
Note i've split the call over 3 lines only so it's easier to read. For your actual call you'll prob want to avoid the line breaks.
hideParent would be your TV say a check box that has a value of '1'. If checked just the wf.wrapper will be displayed which will mean no info about the parent is visible.
You may also need to set the innerTpl with code that doesn't contain the output filter as not sure if the child docs will inherit &parentRowTpl template.
I haven't actually tried this but would of thought it would work.
The other alternative is possibly seeing if you can achieve it using getResources.