Preventing Hyperlink inside WPF RichTextbox from being edited by end user

I am having a WPf hyperlink inside a WPf Richtextbox , clicking on hyperlink results in opening of a popup. But i wish to prevent the editing of hyperlink text.

Initially it looks like below

but when user edits the hyperlink it looks like this

So I wish to prevent this editing o开发者_高级运维f hyerlink.

---

If you add in a container it cannot be edited (but removed as a whole):

<InlineUIContainer>
    <TextBlock>
        <Hyperlink NavigateUri="http://www.google.com/">
            <Run Text="Google"/>
        </Hyperlink>
    </TextBlock>
</InlineUIContainer>

Would this be any good?