Emulate custom post from site 1 on subsite

Hi,

We are building a site where all user profiles are stored on our main site (blog ID 1).

What I want to do is emulate a single page for the 'profile' post type on all sub-sites so I can still access it like /profiles/profile-slug/ for example.

Is there any way I can manipulate WordPress to do this? At worst is there a way I can manipulate the 'profiles' archive page to display a single item loaded by switching to blog 1?

Thanks,
Chris.