Redirect w/ params

[eluser]louis w[/eluser]
What is the best way to redirect to a page, with params (post/get).

An example of this would be:
User is at /page/edit and submits a form to /page/save, there are some problems with the post so the form would want to redirect back to /page/edit but keep the POST params so they do not loose their data.

I know i could just include the view right on /page/save, but i like the constancy of keeping the edit form at /page/edit.