[Plugin: Fast Secure Contact Form] How do I disable the anchor in the url for the thank you page

I can see why it would be useful but I have such a short page I don’t need it, and it hides my navigation which I think might be confusing.

Can I disable it (I can go into the code) and as a feature request can you make the anchor optional?

Thanks!

http://wordpress.org/extend/plugins/si-contact-form/