After register a Exchange Web global form, not want the draft fold use this form.

I register a exchange web global form using the script:
http://support.microsoft.com/kb/306989/de

It make all of the open command render with my form.

Now what I want to do is:  when exchange render the draft folder's
email, I don't want it to use my form, I would like exchange use it's
default form.

Can I do that?

Thank you!
sw