How Do You Call RMD On A Component That Has No Editor?

I have a custom component that has no editor (i.e. NoEditor=TRUE in DtsPipelineComponent attribute).

This component derives all of its metadata based on the input (hence no editor is needed). What this means is that if the input changes in any way (e.g. the datatype of a column changes) my component will fail validation. That's not a problem, the problem is my Validate() method returns DTSValidationStatus.VS_NEEDSNEWMETADATA but ReinitializeMetaData() is not being called.

I get the familiar warning from the component:
Warning 1 Validation warning. Data Flow Task: Normaliser: The component has inconsistent metadata. TestHarness.dtsx 0 0

and when I double-click on the component I get the familiar dialog box:
TITLE: Editing Component
------------------------------
The component is not in a valid state. Do you want the component to fix itself automatically?
------------------------------
BUTTONS:
&Yes
&No
Cancel
------------------------------



but when I click on 'Yes', nothing happens. RMD never gets called.


The workaround is to detach and reattach the input (which results in a call to ReinitializeMetadata() ) or set NoEditor=FALSE in DtsPipelineComponent attribute but I'd rather not have to do that because strictly speaking the user has no need to edit the component through advanced properties.

Is there another way around this problem? Is there a way to call RMD on a component that has no editor?

Thanks
Jamie

[Microsoft follow-up]