Bringing people back to the current page after signing up?

I've got some pages that have a mix of unprotected and protected content (using the ms-protect-content short codes); and I've got a subscription form on the page. When somebody signs up, I'd like to bring them back to this page.

Is there a way to do this with Protected Content?

[I had previously asked this about the Membership plugin, but Michael said it would require a lot of custom coding there.]